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Options Analysis

This module provides a simplified implementation of a pandas-like options system.

It allows users to get, set, and reset various options that control the behavior of data display and processing. The module also includes a context manager for temporarily changing options.

Example

set_option('display.max_rows', 100) print(get_option('display.max_rows')) 100 with option_context('display.max_rows', 10): ... print(get_option('display.max_rows')) 10 print(get_option('display.max_rows')) 100

AggColumns

Aggregation columns accessed via cols.agg.*.

Source code in pyretailscience/options.py 
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class AggColumns:
    """Aggregation columns accessed via cols.agg.*."""

    def __init__(self) -> None:
        """Initialize aggregation columns."""
        # Base aggregation columns
        self.customer_id: str = get_option("column.agg.customer_id")
        self.transaction_id: str = get_option("column.agg.transaction_id")
        self.unit_spend: str = get_option("column.agg.unit_spend")
        self.unit_qty: str = get_option("column.agg.unit_quantity")
        self.unit_cost: str = get_option("column.agg.unit_cost")
        self.promo_unit_spend: str = get_option("column.agg.promo_unit_spend")
        self.promo_unit_qty: str = get_option("column.agg.promo_unit_quantity")

        # Period variants
        self.customer_id_p1: str = ColumnHelper.join_options("column.agg.customer_id", "column.suffix.period_1")
        self.customer_id_p2: str = ColumnHelper.join_options("column.agg.customer_id", "column.suffix.period_2")
        self.transaction_id_p1: str = ColumnHelper.join_options("column.agg.transaction_id", "column.suffix.period_1")
        self.transaction_id_p2: str = ColumnHelper.join_options("column.agg.transaction_id", "column.suffix.period_2")
        self.unit_spend_p1: str = ColumnHelper.join_options("column.agg.unit_spend", "column.suffix.period_1")
        self.unit_spend_p2: str = ColumnHelper.join_options("column.agg.unit_spend", "column.suffix.period_2")
        self.unit_qty_p1: str = ColumnHelper.join_options("column.agg.unit_quantity", "column.suffix.period_1")
        self.unit_qty_p2: str = ColumnHelper.join_options("column.agg.unit_quantity", "column.suffix.period_2")
        self.unit_cost_p1: str = ColumnHelper.join_options("column.agg.unit_cost", "column.suffix.period_1")
        self.unit_cost_p2: str = ColumnHelper.join_options("column.agg.unit_cost", "column.suffix.period_2")
        self.promo_unit_spend_p1: str = ColumnHelper.join_options(
            "column.agg.promo_unit_spend",
            "column.suffix.period_1",
        )
        self.promo_unit_spend_p2: str = ColumnHelper.join_options(
            "column.agg.promo_unit_spend",
            "column.suffix.period_2",
        )
        self.promo_unit_qty_p1: str = ColumnHelper.join_options(
            "column.agg.promo_unit_quantity",
            "column.suffix.period_1",
        )
        self.promo_unit_qty_p2: str = ColumnHelper.join_options(
            "column.agg.promo_unit_quantity",
            "column.suffix.period_2",
        )

        # Diff variants
        self.customer_id_diff: str = ColumnHelper.join_options("column.agg.customer_id", "column.suffix.difference")
        self.transaction_id_diff: str = ColumnHelper.join_options(
            "column.agg.transaction_id",
            "column.suffix.difference",
        )
        self.unit_spend_diff: str = ColumnHelper.join_options("column.agg.unit_spend", "column.suffix.difference")
        self.unit_qty_diff: str = ColumnHelper.join_options("column.agg.unit_quantity", "column.suffix.difference")
        self.unit_cost_diff: str = ColumnHelper.join_options("column.agg.unit_cost", "column.suffix.difference")
        self.promo_unit_spend_diff: str = ColumnHelper.join_options(
            "column.agg.promo_unit_spend",
            "column.suffix.difference",
        )
        self.promo_unit_qty_diff: str = ColumnHelper.join_options(
            "column.agg.promo_unit_quantity",
            "column.suffix.difference",
        )

        # Percent diff variants
        self.customer_id_pct_diff: str = ColumnHelper.join_options(
            "column.agg.customer_id",
            "column.suffix.percent_difference",
        )
        self.transaction_id_pct_diff: str = ColumnHelper.join_options(
            "column.agg.transaction_id",
            "column.suffix.percent_difference",
        )
        self.unit_spend_pct_diff: str = ColumnHelper.join_options(
            "column.agg.unit_spend",
            "column.suffix.percent_difference",
        )
        self.unit_qty_pct_diff: str = ColumnHelper.join_options(
            "column.agg.unit_quantity",
            "column.suffix.percent_difference",
        )
        self.unit_cost_pct_diff: str = ColumnHelper.join_options(
            "column.agg.unit_cost",
            "column.suffix.percent_difference",
        )
        self.promo_unit_spend_pct_diff: str = ColumnHelper.join_options(
            "column.agg.promo_unit_spend",
            "column.suffix.percent_difference",
        )
        self.promo_unit_qty_pct_diff: str = ColumnHelper.join_options(
            "column.agg.promo_unit_quantity",
            "column.suffix.percent_difference",
        )

        # Contribution variants
        self.customer_id_contrib: str = ColumnHelper.join_options(
            "column.agg.customer_id",
            "column.suffix.contribution",
        )

        # Percent variants
        self.customers_pct: str = ColumnHelper.join_options("column.agg.customer_id", "column.suffix.percent")

        # Unknown/Total variants
        self.unit_spend_unknown: str = ColumnHelper.join_options(
            "column.agg.unit_spend",
            "column.suffix.unknown_customer",
        )
        self.unit_spend_total: str = ColumnHelper.join_options("column.agg.unit_spend", "column.suffix.total")
        self.transaction_id_unknown: str = ColumnHelper.join_options(
            "column.agg.transaction_id",
            "column.suffix.unknown_customer",
        )
        self.transaction_id_total: str = ColumnHelper.join_options("column.agg.transaction_id", "column.suffix.total")
        self.unit_qty_unknown: str = ColumnHelper.join_options(
            "column.agg.unit_quantity",
            "column.suffix.unknown_customer",
        )
        self.unit_qty_total: str = ColumnHelper.join_options("column.agg.unit_quantity", "column.suffix.total")

__init__()

Initialize aggregation columns.

Source code in pyretailscience/options.py 
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def __init__(self) -> None:
    """Initialize aggregation columns."""
    # Base aggregation columns
    self.customer_id: str = get_option("column.agg.customer_id")
    self.transaction_id: str = get_option("column.agg.transaction_id")
    self.unit_spend: str = get_option("column.agg.unit_spend")
    self.unit_qty: str = get_option("column.agg.unit_quantity")
    self.unit_cost: str = get_option("column.agg.unit_cost")
    self.promo_unit_spend: str = get_option("column.agg.promo_unit_spend")
    self.promo_unit_qty: str = get_option("column.agg.promo_unit_quantity")

    # Period variants
    self.customer_id_p1: str = ColumnHelper.join_options("column.agg.customer_id", "column.suffix.period_1")
    self.customer_id_p2: str = ColumnHelper.join_options("column.agg.customer_id", "column.suffix.period_2")
    self.transaction_id_p1: str = ColumnHelper.join_options("column.agg.transaction_id", "column.suffix.period_1")
    self.transaction_id_p2: str = ColumnHelper.join_options("column.agg.transaction_id", "column.suffix.period_2")
    self.unit_spend_p1: str = ColumnHelper.join_options("column.agg.unit_spend", "column.suffix.period_1")
    self.unit_spend_p2: str = ColumnHelper.join_options("column.agg.unit_spend", "column.suffix.period_2")
    self.unit_qty_p1: str = ColumnHelper.join_options("column.agg.unit_quantity", "column.suffix.period_1")
    self.unit_qty_p2: str = ColumnHelper.join_options("column.agg.unit_quantity", "column.suffix.period_2")
    self.unit_cost_p1: str = ColumnHelper.join_options("column.agg.unit_cost", "column.suffix.period_1")
    self.unit_cost_p2: str = ColumnHelper.join_options("column.agg.unit_cost", "column.suffix.period_2")
    self.promo_unit_spend_p1: str = ColumnHelper.join_options(
        "column.agg.promo_unit_spend",
        "column.suffix.period_1",
    )
    self.promo_unit_spend_p2: str = ColumnHelper.join_options(
        "column.agg.promo_unit_spend",
        "column.suffix.period_2",
    )
    self.promo_unit_qty_p1: str = ColumnHelper.join_options(
        "column.agg.promo_unit_quantity",
        "column.suffix.period_1",
    )
    self.promo_unit_qty_p2: str = ColumnHelper.join_options(
        "column.agg.promo_unit_quantity",
        "column.suffix.period_2",
    )

    # Diff variants
    self.customer_id_diff: str = ColumnHelper.join_options("column.agg.customer_id", "column.suffix.difference")
    self.transaction_id_diff: str = ColumnHelper.join_options(
        "column.agg.transaction_id",
        "column.suffix.difference",
    )
    self.unit_spend_diff: str = ColumnHelper.join_options("column.agg.unit_spend", "column.suffix.difference")
    self.unit_qty_diff: str = ColumnHelper.join_options("column.agg.unit_quantity", "column.suffix.difference")
    self.unit_cost_diff: str = ColumnHelper.join_options("column.agg.unit_cost", "column.suffix.difference")
    self.promo_unit_spend_diff: str = ColumnHelper.join_options(
        "column.agg.promo_unit_spend",
        "column.suffix.difference",
    )
    self.promo_unit_qty_diff: str = ColumnHelper.join_options(
        "column.agg.promo_unit_quantity",
        "column.suffix.difference",
    )

    # Percent diff variants
    self.customer_id_pct_diff: str = ColumnHelper.join_options(
        "column.agg.customer_id",
        "column.suffix.percent_difference",
    )
    self.transaction_id_pct_diff: str = ColumnHelper.join_options(
        "column.agg.transaction_id",
        "column.suffix.percent_difference",
    )
    self.unit_spend_pct_diff: str = ColumnHelper.join_options(
        "column.agg.unit_spend",
        "column.suffix.percent_difference",
    )
    self.unit_qty_pct_diff: str = ColumnHelper.join_options(
        "column.agg.unit_quantity",
        "column.suffix.percent_difference",
    )
    self.unit_cost_pct_diff: str = ColumnHelper.join_options(
        "column.agg.unit_cost",
        "column.suffix.percent_difference",
    )
    self.promo_unit_spend_pct_diff: str = ColumnHelper.join_options(
        "column.agg.promo_unit_spend",
        "column.suffix.percent_difference",
    )
    self.promo_unit_qty_pct_diff: str = ColumnHelper.join_options(
        "column.agg.promo_unit_quantity",
        "column.suffix.percent_difference",
    )

    # Contribution variants
    self.customer_id_contrib: str = ColumnHelper.join_options(
        "column.agg.customer_id",
        "column.suffix.contribution",
    )

    # Percent variants
    self.customers_pct: str = ColumnHelper.join_options("column.agg.customer_id", "column.suffix.percent")

    # Unknown/Total variants
    self.unit_spend_unknown: str = ColumnHelper.join_options(
        "column.agg.unit_spend",
        "column.suffix.unknown_customer",
    )
    self.unit_spend_total: str = ColumnHelper.join_options("column.agg.unit_spend", "column.suffix.total")
    self.transaction_id_unknown: str = ColumnHelper.join_options(
        "column.agg.transaction_id",
        "column.suffix.unknown_customer",
    )
    self.transaction_id_total: str = ColumnHelper.join_options("column.agg.transaction_id", "column.suffix.total")
    self.unit_qty_unknown: str = ColumnHelper.join_options(
        "column.agg.unit_quantity",
        "column.suffix.unknown_customer",
    )
    self.unit_qty_total: str = ColumnHelper.join_options("column.agg.unit_quantity", "column.suffix.total")

CalcColumns

Calculated columns accessed via cols.calc.*.

Source code in pyretailscience/options.py 
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class CalcColumns:
    """Calculated columns accessed via cols.calc.*."""

    def __init__(self) -> None:
        """Initialize calculated columns."""
        # Base calculated columns
        self.spend_per_cust: str = get_option("column.calc.spend_per_customer")
        self.trans_per_cust: str = get_option("column.calc.transactions_per_customer")
        self.spend_per_trans: str = get_option("column.calc.spend_per_transaction")
        self.units_per_trans: str = get_option("column.calc.units_per_transaction")
        self.price_per_unit: str = get_option("column.calc.price_per_unit")
        self.price_elasticity: str = get_option("column.calc.price_elasticity")
        self.frequency_elasticity: str = get_option("column.calc.frequency_elasticity")

        # Period variants
        self.spend_per_cust_p1: str = ColumnHelper.join_options(
            "column.calc.spend_per_customer",
            "column.suffix.period_1",
        )
        self.spend_per_cust_p2: str = ColumnHelper.join_options(
            "column.calc.spend_per_customer",
            "column.suffix.period_2",
        )
        self.trans_per_cust_p1: str = ColumnHelper.join_options(
            "column.calc.transactions_per_customer",
            "column.suffix.period_1",
        )
        self.trans_per_cust_p2: str = ColumnHelper.join_options(
            "column.calc.transactions_per_customer",
            "column.suffix.period_2",
        )
        self.spend_per_trans_p1: str = ColumnHelper.join_options(
            "column.calc.spend_per_transaction",
            "column.suffix.period_1",
        )
        self.spend_per_trans_p2: str = ColumnHelper.join_options(
            "column.calc.spend_per_transaction",
            "column.suffix.period_2",
        )
        self.units_per_trans_p1: str = ColumnHelper.join_options(
            "column.calc.units_per_transaction",
            "column.suffix.period_1",
        )
        self.units_per_trans_p2: str = ColumnHelper.join_options(
            "column.calc.units_per_transaction",
            "column.suffix.period_2",
        )
        self.price_per_unit_p1: str = ColumnHelper.join_options("column.calc.price_per_unit", "column.suffix.period_1")
        self.price_per_unit_p2: str = ColumnHelper.join_options("column.calc.price_per_unit", "column.suffix.period_2")

        # Diff variants
        self.spend_per_cust_diff: str = ColumnHelper.join_options(
            "column.calc.spend_per_customer",
            "column.suffix.difference",
        )
        self.trans_per_cust_diff: str = ColumnHelper.join_options(
            "column.calc.transactions_per_customer",
            "column.suffix.difference",
        )
        self.spend_per_trans_diff: str = ColumnHelper.join_options(
            "column.calc.spend_per_transaction",
            "column.suffix.difference",
        )
        self.units_per_trans_diff: str = ColumnHelper.join_options(
            "column.calc.units_per_transaction",
            "column.suffix.difference",
        )
        self.price_per_unit_diff: str = ColumnHelper.join_options(
            "column.calc.price_per_unit",
            "column.suffix.difference",
        )

        # Percent diff variants
        self.spend_per_cust_pct_diff: str = ColumnHelper.join_options(
            "column.calc.spend_per_customer",
            "column.suffix.percent_difference",
        )
        self.trans_per_cust_pct_diff: str = ColumnHelper.join_options(
            "column.calc.transactions_per_customer",
            "column.suffix.percent_difference",
        )
        self.spend_per_trans_pct_diff: str = ColumnHelper.join_options(
            "column.calc.spend_per_transaction",
            "column.suffix.percent_difference",
        )
        self.units_per_trans_pct_diff: str = ColumnHelper.join_options(
            "column.calc.units_per_transaction",
            "column.suffix.percent_difference",
        )
        self.price_per_unit_pct_diff: str = ColumnHelper.join_options(
            "column.calc.price_per_unit",
            "column.suffix.percent_difference",
        )

        # Contribution variants
        self.spend_per_cust_contrib: str = ColumnHelper.join_options(
            "column.calc.spend_per_customer",
            "column.suffix.contribution",
        )
        self.trans_per_cust_contrib: str = ColumnHelper.join_options(
            "column.calc.transactions_per_customer",
            "column.suffix.contribution",
        )
        self.spend_per_trans_contrib: str = ColumnHelper.join_options(
            "column.calc.spend_per_transaction",
            "column.suffix.contribution",
        )
        self.units_per_trans_contrib: str = ColumnHelper.join_options(
            "column.calc.units_per_transaction",
            "column.suffix.contribution",
        )
        self.price_per_unit_contrib: str = ColumnHelper.join_options(
            "column.calc.price_per_unit",
            "column.suffix.contribution",
        )

        # Unknown/Total variants
        self.spend_per_trans_unknown: str = ColumnHelper.join_options(
            "column.calc.spend_per_transaction",
            "column.suffix.unknown_customer",
        )
        self.spend_per_trans_total: str = ColumnHelper.join_options(
            "column.calc.spend_per_transaction",
            "column.suffix.total",
        )
        self.price_per_unit_unknown: str = ColumnHelper.join_options(
            "column.calc.price_per_unit",
            "column.suffix.unknown_customer",
        )
        self.price_per_unit_total: str = ColumnHelper.join_options("column.calc.price_per_unit", "column.suffix.total")
        self.units_per_trans_unknown: str = ColumnHelper.join_options(
            "column.calc.units_per_transaction",
            "column.suffix.unknown_customer",
        )
        self.units_per_trans_total: str = ColumnHelper.join_options(
            "column.calc.units_per_transaction",
            "column.suffix.total",
        )

__init__()

Initialize calculated columns.

Source code in pyretailscience/options.py 
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def __init__(self) -> None:
    """Initialize calculated columns."""
    # Base calculated columns
    self.spend_per_cust: str = get_option("column.calc.spend_per_customer")
    self.trans_per_cust: str = get_option("column.calc.transactions_per_customer")
    self.spend_per_trans: str = get_option("column.calc.spend_per_transaction")
    self.units_per_trans: str = get_option("column.calc.units_per_transaction")
    self.price_per_unit: str = get_option("column.calc.price_per_unit")
    self.price_elasticity: str = get_option("column.calc.price_elasticity")
    self.frequency_elasticity: str = get_option("column.calc.frequency_elasticity")

    # Period variants
    self.spend_per_cust_p1: str = ColumnHelper.join_options(
        "column.calc.spend_per_customer",
        "column.suffix.period_1",
    )
    self.spend_per_cust_p2: str = ColumnHelper.join_options(
        "column.calc.spend_per_customer",
        "column.suffix.period_2",
    )
    self.trans_per_cust_p1: str = ColumnHelper.join_options(
        "column.calc.transactions_per_customer",
        "column.suffix.period_1",
    )
    self.trans_per_cust_p2: str = ColumnHelper.join_options(
        "column.calc.transactions_per_customer",
        "column.suffix.period_2",
    )
    self.spend_per_trans_p1: str = ColumnHelper.join_options(
        "column.calc.spend_per_transaction",
        "column.suffix.period_1",
    )
    self.spend_per_trans_p2: str = ColumnHelper.join_options(
        "column.calc.spend_per_transaction",
        "column.suffix.period_2",
    )
    self.units_per_trans_p1: str = ColumnHelper.join_options(
        "column.calc.units_per_transaction",
        "column.suffix.period_1",
    )
    self.units_per_trans_p2: str = ColumnHelper.join_options(
        "column.calc.units_per_transaction",
        "column.suffix.period_2",
    )
    self.price_per_unit_p1: str = ColumnHelper.join_options("column.calc.price_per_unit", "column.suffix.period_1")
    self.price_per_unit_p2: str = ColumnHelper.join_options("column.calc.price_per_unit", "column.suffix.period_2")

    # Diff variants
    self.spend_per_cust_diff: str = ColumnHelper.join_options(
        "column.calc.spend_per_customer",
        "column.suffix.difference",
    )
    self.trans_per_cust_diff: str = ColumnHelper.join_options(
        "column.calc.transactions_per_customer",
        "column.suffix.difference",
    )
    self.spend_per_trans_diff: str = ColumnHelper.join_options(
        "column.calc.spend_per_transaction",
        "column.suffix.difference",
    )
    self.units_per_trans_diff: str = ColumnHelper.join_options(
        "column.calc.units_per_transaction",
        "column.suffix.difference",
    )
    self.price_per_unit_diff: str = ColumnHelper.join_options(
        "column.calc.price_per_unit",
        "column.suffix.difference",
    )

    # Percent diff variants
    self.spend_per_cust_pct_diff: str = ColumnHelper.join_options(
        "column.calc.spend_per_customer",
        "column.suffix.percent_difference",
    )
    self.trans_per_cust_pct_diff: str = ColumnHelper.join_options(
        "column.calc.transactions_per_customer",
        "column.suffix.percent_difference",
    )
    self.spend_per_trans_pct_diff: str = ColumnHelper.join_options(
        "column.calc.spend_per_transaction",
        "column.suffix.percent_difference",
    )
    self.units_per_trans_pct_diff: str = ColumnHelper.join_options(
        "column.calc.units_per_transaction",
        "column.suffix.percent_difference",
    )
    self.price_per_unit_pct_diff: str = ColumnHelper.join_options(
        "column.calc.price_per_unit",
        "column.suffix.percent_difference",
    )

    # Contribution variants
    self.spend_per_cust_contrib: str = ColumnHelper.join_options(
        "column.calc.spend_per_customer",
        "column.suffix.contribution",
    )
    self.trans_per_cust_contrib: str = ColumnHelper.join_options(
        "column.calc.transactions_per_customer",
        "column.suffix.contribution",
    )
    self.spend_per_trans_contrib: str = ColumnHelper.join_options(
        "column.calc.spend_per_transaction",
        "column.suffix.contribution",
    )
    self.units_per_trans_contrib: str = ColumnHelper.join_options(
        "column.calc.units_per_transaction",
        "column.suffix.contribution",
    )
    self.price_per_unit_contrib: str = ColumnHelper.join_options(
        "column.calc.price_per_unit",
        "column.suffix.contribution",
    )

    # Unknown/Total variants
    self.spend_per_trans_unknown: str = ColumnHelper.join_options(
        "column.calc.spend_per_transaction",
        "column.suffix.unknown_customer",
    )
    self.spend_per_trans_total: str = ColumnHelper.join_options(
        "column.calc.spend_per_transaction",
        "column.suffix.total",
    )
    self.price_per_unit_unknown: str = ColumnHelper.join_options(
        "column.calc.price_per_unit",
        "column.suffix.unknown_customer",
    )
    self.price_per_unit_total: str = ColumnHelper.join_options("column.calc.price_per_unit", "column.suffix.total")
    self.units_per_trans_unknown: str = ColumnHelper.join_options(
        "column.calc.units_per_transaction",
        "column.suffix.unknown_customer",
    )
    self.units_per_trans_total: str = ColumnHelper.join_options(
        "column.calc.units_per_transaction",
        "column.suffix.total",
    )

ColumnHelper

A class to help with column naming conventions.

Access patterns: - Base columns: cols.transaction_date, cols.customer_id, etc. - Aggregation columns: cols.agg.unit_spend, cols.agg.customer_id_p1, etc. - Calculated columns: cols.calc.spend_per_cust, cols.calc.price_per_unit_diff, etc.

Source code in pyretailscience/options.py 
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class ColumnHelper:
    """A class to help with column naming conventions.

    Access patterns:
    - Base columns: cols.transaction_date, cols.customer_id, etc.
    - Aggregation columns: cols.agg.unit_spend, cols.agg.customer_id_p1, etc.
    - Calculated columns: cols.calc.spend_per_cust, cols.calc.price_per_unit_diff, etc.
    """

    def __init__(self) -> None:
        """Initialize column helper with base columns and nested column groups."""
        # Base columns (stay flat on ColumnHelper)
        self.transaction_date = get_option("column.transaction_date")
        self.transaction_time = get_option("column.transaction_time")
        self.customer_id = get_option("column.customer_id")
        self.transaction_id = get_option("column.transaction_id")
        self.store_id = get_option("column.store_id")
        self.unit_spend = get_option("column.unit_spend")
        self.unit_qty = get_option("column.unit_quantity")
        self.unit_cost = get_option("column.unit_cost")
        self.promo_unit_spend = get_option("column.promo_unit_spend")
        self.promo_unit_qty = get_option("column.promo_unit_quantity")

        # Nested column groups
        self.agg = AggColumns()
        self.calc = CalcColumns()

    @staticmethod
    def join_options(*args: str, sep: str = "_") -> str:
        """Join multiple option values together with a separator.

        This method resolves option keys to their configured values and joins them.
        Commonly used to create column names with suffixes like period indicators.

        Args:
            *args: Option keys to resolve and join (e.g., "column.agg.unit_spend", "column.suffix.period_1")
            sep: Separator to use when joining values (default: "_")

        Returns:
            A string with all resolved option values joined together.

        Example:
            >>> join_options("column.agg.unit_spend", "column.suffix.period_1")
            "spend_p1"  # Assuming default options
        """
        return sep.join(map(get_option, args))

__init__()

Initialize column helper with base columns and nested column groups.

Source code in pyretailscience/options.py 
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def __init__(self) -> None:
    """Initialize column helper with base columns and nested column groups."""
    # Base columns (stay flat on ColumnHelper)
    self.transaction_date = get_option("column.transaction_date")
    self.transaction_time = get_option("column.transaction_time")
    self.customer_id = get_option("column.customer_id")
    self.transaction_id = get_option("column.transaction_id")
    self.store_id = get_option("column.store_id")
    self.unit_spend = get_option("column.unit_spend")
    self.unit_qty = get_option("column.unit_quantity")
    self.unit_cost = get_option("column.unit_cost")
    self.promo_unit_spend = get_option("column.promo_unit_spend")
    self.promo_unit_qty = get_option("column.promo_unit_quantity")

    # Nested column groups
    self.agg = AggColumns()
    self.calc = CalcColumns()

join_options(*args, sep='_') staticmethod

Join multiple option values together with a separator.

This method resolves option keys to their configured values and joins them. Commonly used to create column names with suffixes like period indicators.

Parameters:

Name Type Description Default
*args str

Option keys to resolve and join (e.g., "column.agg.unit_spend", "column.suffix.period_1")

 ()
sep str

Separator to use when joining values (default: "_")

 '_'

Returns:

Type Description
str

A string with all resolved option values joined together.
Example

join_options("column.agg.unit_spend", "column.suffix.period_1") "spend_p1" # Assuming default options

Source code in pyretailscience/options.py 
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@staticmethod
def join_options(*args: str, sep: str = "_") -> str:
    """Join multiple option values together with a separator.

    This method resolves option keys to their configured values and joins them.
    Commonly used to create column names with suffixes like period indicators.

    Args:
        *args: Option keys to resolve and join (e.g., "column.agg.unit_spend", "column.suffix.period_1")
        sep: Separator to use when joining values (default: "_")

    Returns:
        A string with all resolved option values joined together.

    Example:
        >>> join_options("column.agg.unit_spend", "column.suffix.period_1")
        "spend_p1"  # Assuming default options
    """
    return sep.join(map(get_option, args))

Options

A class to manage configurable options.

Source code in pyretailscience/options.py 
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class Options:
    """A class to manage configurable options."""

    def __init__(self) -> None:
        """Initializes the options with default values."""
        self._options: dict[str, OptionTypes] = {
            # Database columns
            "column.customer_id": "customer_id",
            "column.transaction_id": "transaction_id",
            "column.transaction_date": "transaction_date",
            "column.transaction_time": "transaction_time",
            "column.product_id": "product_id",
            "column.unit_quantity": "unit_quantity",
            "column.unit_price": "unit_price",
            "column.unit_spend": "unit_spend",
            "column.unit_cost": "unit_cost",
            "column.promo_unit_spend": "promo_unit_spend",
            "column.promo_unit_quantity": "promo_unit_quantity",
            "column.store_id": "store_id",
            # Aggregation columns
            "column.agg.customer_id": "customers",
            "column.agg.transaction_id": "transactions",
            "column.agg.product_id": "products",
            "column.agg.unit_quantity": "units",
            "column.agg.unit_price": "prices",
            "column.agg.unit_spend": "spend",
            "column.agg.unit_cost": "costs",
            "column.agg.promo_unit_spend": "promo_spend",
            "column.agg.promo_unit_quantity": "promo_units",
            "column.agg.store_id": "stores",
            # Calculated columns
            "column.calc.price_per_unit": "price_per_unit",
            "column.calc.units_per_transaction": "units_per_transaction",
            "column.calc.spend_per_customer": "spend_per_customer",
            "column.calc.spend_per_transaction": "spend_per_transaction",
            "column.calc.transactions_per_customer": "transactions_per_customer",
            "column.calc.price_elasticity": "price_elasticity",
            "column.calc.frequency_elasticity": "frequency_elasticity",
            # Abbreviation suffix
            "column.suffix.count": "cnt",
            "column.suffix.percent": "pct",
            "column.suffix.difference": "diff",
            "column.suffix.percent_difference": "pct_diff",
            "column.suffix.contribution": "contrib",
            "column.suffix.period_1": "p1",
            "column.suffix.period_2": "p2",
            "column.suffix.unknown_customer": "unknown",
            "column.suffix.total": "total",
            # Color palettes
            "plot.color.mono_palette": [
                COLORS["green"][500],
                COLORS["green"][300],
                COLORS["green"][700],
            ],
            "plot.color.multi_color_palette": [
                COLORS[color][shade]
                for shade in [500, 300, 700]
                for color in ["green", "blue", "red", "orange", "yellow", "violet", "pink"]
            ],
            "plot.color.positive": COLORS["green"][500],
            "plot.color.negative": COLORS["red"][500],
            "plot.color.neutral": COLORS["gray"][500],
            "plot.color.difference": COLORS["blue"][500],
            "plot.color.context": COLORS["gray"][400],
            "plot.color.primary": COLORS["green"][500],
            "plot.color.heatmap": "green",
            # Plot font options
            "plot.font.title_font": "poppins_semi_bold",
            "plot.font.label_font": "poppins_regular",
            "plot.font.tick_font": "poppins_regular",
            "plot.font.source_font": "poppins_light_italic",
            "plot.font.data_label_font": "poppins_regular",
            "plot.font.title_size": 20.0,
            "plot.font.label_size": 12.0,
            "plot.font.tick_size": 10.0,
            "plot.font.source_size": 10.0,
            "plot.font.data_label_size": 8.0,
            # Plot spacing options
            "plot.spacing.title_pad": 10,
            "plot.spacing.x_label_pad": 10,
            "plot.spacing.y_label_pad": 10,
            # Plot style options
            "plot.style.background_color": "white",
            "plot.style.grid_color": "#DAD8D7",
            "plot.style.grid_alpha": 0.5,
            "plot.style.show_top_spine": False,
            "plot.style.show_right_spine": False,
            "plot.style.show_bottom_spine": True,
            "plot.style.show_left_spine": True,
            "plot.style.legend_bbox_to_anchor": [1.05, 1.0],
            "plot.style.legend_loc": "upper left",
        }
        self._descriptions: dict[str, str] = {
            # Database columns
            "column.customer_id": "The name of the column containing customer IDs.",
            "column.transaction_id": "The name of the column containing transaction IDs.",
            "column.transaction_date": "The name of the column containing transaction dates.",
            "column.transaction_time": "The name of the column containing transaction times.",
            "column.product_id": "The name of the column containing product IDs.",
            "column.unit_quantity": "The name of the column containing the number of units sold.",
            "column.unit_price": "The name of the column containing the unit price of the product.",
            "column.unit_spend": (
                "The name of the column containing the total spend of the products in the transaction."
                "ie, unit_price * units",
            ),
            "column.unit_cost": (
                "The name of the column containing the total cost of the products in the transaction. "
                "ie, single unit cost * units",
            ),
            "column.promo_unit_spend": (
                "The name of the column containing the total spend on promotion of the products in the transaction. "
                "ie, promotional unit price * units",
            ),
            "column.promo_unit_quantity": ("The name of the column containing the number of units sold on promotion."),
            "column.store_id": "The name of the column containing store IDs of the transaction.",
            # Aggregation columns
            "column.agg.customer_id": "The name of the column containing the number of unique customers.",
            "column.agg.transaction_id": "The name of the column containing the number of transactions.",
            "column.agg.product_id": "The name of the column containing the number of unique products.",
            "column.agg.unit_quantity": "The name of the column containing the total number of units sold.",
            "column.agg.unit_price": "The name of the column containing the total unit price of products.",
            "column.agg.unit_spend": (
                "The name of the column containing the total spend of the units in the transaction."
            ),
            "column.agg.unit_cost": "The name of the column containing the total unit cost of products.",
            "column.agg.promo_unit_spend": (
                "The name of the column containing the total promotional spend of the units in the transaction."
            ),
            "column.agg.promo_unit_quantity": (
                "The name of the column containing the total number of units sold on promotion."
            ),
            "column.agg.store_id": "The name of the column containing the number of unique stores.",
            # Calculated columns
            "column.calc.price_per_unit": "The name of the column containing the price per unit.",
            "column.calc.units_per_transaction": "The name of the column containing the units per transaction.",
            "column.calc.spend_per_customer": "The name of the column containing the spend per customer.",
            "column.calc.spend_per_transaction": "The name of the column containing the spend per transaction.",
            "column.calc.transactions_per_customer": "The name of the column containing the transactions per customer.",
            "column.calc.price_elasticity": "The name of the column containing the price elasticity calculation.",
            "column.calc.frequency_elasticity": "The name of the column containing the price frequency calculation.",
            # Abbreviation suffixes
            "column.suffix.count": "The suffix to use for count columns.",
            "column.suffix.percent": "The suffix to use for percentage columns.",
            "column.suffix.difference": "The suffix to use for difference columns.",
            "column.suffix.percent_difference": "The suffix to use for percentage difference columns.",
            "column.suffix.contribution": "The suffix to use for revenue contribution columns.",
            "column.suffix.period_1": (
                "The suffix to use for period 1 columns. Often this could represent last year for instance."
            ),
            "column.suffix.period_2": (
                "The suffix to use for period 2 columns. Often this could represent this year for instance."
            ),
            "column.suffix.unknown_customer": "The suffix to use for unknown customer columns.",
            "column.suffix.total": "The suffix to use for total columns.",
            # Color options
            "plot.color.mono_palette": "Monochromatic palette for plots with few series (default: 3 green shades). Set to [] to disable.",
            "plot.color.multi_color_palette": "Multi-color palette for plots with many series (default: 21 Tailwind colors)",
            "plot.color.positive": "Color for positive values (e.g., gains, increases)",
            "plot.color.negative": "Color for negative values (e.g., losses, decreases)",
            "plot.color.neutral": "Color for neutral values (e.g., net amounts)",
            "plot.color.difference": "Color for difference values (e.g., waterfall transitions, tree differences)",
            "plot.color.context": "Color for de-emphasized context lines",
            "plot.color.primary": "Default color for single-series plots",
            "plot.color.heatmap": "Tailwind color name (e.g., 'green', 'blue') or matplotlib colormap name (e.g., 'Greens', 'viridis') for heatmaps",
            # Plot font descriptions
            "plot.font.title_font": "The font family to use for plot titles.",
            "plot.font.label_font": "The font family to use for axis labels.",
            "plot.font.tick_font": "The font family to use for axis tick labels.",
            "plot.font.source_font": "The font family to use for source text.",
            "plot.font.data_label_font": "The font family to use for data point labels.",
            "plot.font.title_size": "The font size for plot titles (in points).",
            "plot.font.label_size": "The font size for axis labels (in points).",
            "plot.font.tick_size": "The font size for axis tick labels (in points).",
            "plot.font.source_size": "The font size for source text (in points).",
            "plot.font.data_label_size": "The font size for data point labels (in points).",
            # Plot spacing descriptions
            "plot.spacing.title_pad": "The padding above the title (in points).",
            "plot.spacing.x_label_pad": "The padding below the x-axis label (in points).",
            "plot.spacing.y_label_pad": "The padding to the left of the y-axis label (in points).",
            # Plot style descriptions
            "plot.style.background_color": "The background color of the plot area.",
            "plot.style.grid_color": "The color of the grid lines.",
            "plot.style.grid_alpha": "The transparency of the grid lines (0.0 to 1.0).",
            "plot.style.show_top_spine": "Whether to show the top border of the plot.",
            "plot.style.show_right_spine": "Whether to show the right border of the plot.",
            "plot.style.show_bottom_spine": "Whether to show the bottom border of the plot.",
            "plot.style.show_left_spine": "Whether to show the left border of the plot.",
            "plot.style.legend_bbox_to_anchor": "The bounding box anchor for legend positioning when moved outside.",
            "plot.style.legend_loc": "The location of the legend when moved outside the plot.",
        }
        self._default_options: dict[str, OptionTypes] = self._options.copy()

    def set_option(self, pat: str, val: OptionTypes) -> None:
        """Set the value of the specified option.

        Args:
            pat: The option name.
            val: The value to set the option to.

        Raises:
            ValueError: If the option name is unknown.
        """
        if pat not in self._options:
            msg = f"Unknown option: {pat}"
            raise ValueError(msg)

        self._options[pat] = val

    def get_option(self, pat: str) -> OptionTypes:
        """Get the value of the specified option.

        Args:
            pat: The option name.

        Returns:
            The value of the option.

        Raises:
            ValueError: If the option name is unknown.
        """
        if pat in self._options:
            return self._options[pat]

        msg = f"Unknown option: {pat}"
        raise ValueError(msg)

    def reset_option(self, pat: str) -> None:
        """Reset the specified option to its default value.

        Args:
            pat: The option name.

        Raises:
            ValueError: If the option name is unknown.
        """
        if pat not in self._options:
            msg = f"Unknown option: {pat}"
            raise ValueError(msg)

        self._options[pat] = self._default_options[pat]

    def list_options(self) -> list[str]:
        """List all available options.

        Returns:
            A list of all option names.
        """
        return list(self._options.keys())

    def describe_option(self, pat: str) -> str:
        """Describe the specified option.

        Args:
            pat: The option name.

        Returns:
            A string describing the option and its current value.

        Raises:
            ValueError: If the option name is unknown.
        """
        if pat in self._descriptions:
            return f"{pat}: {self._descriptions[pat]} (current value: {self._options[pat]})"

        msg = f"Unknown option: {pat}"
        raise ValueError(msg)

    @staticmethod
    def flatten_options(k: str, v: OptionTypes, parent_key: str = "") -> dict[str, OptionTypes]:
        """Flatten nested options into a single dictionary."""
        if parent_key != "":
            parent_key += "."

        if isinstance(v, dict):
            ret_dict = {}
            for sub_key, sub_value in v.items():
                ret_dict.update(Options.flatten_options(sub_key, sub_value, parent_key=f"{parent_key}{k}"))
            return ret_dict

        return {f"{parent_key}{k}": v}

    @classmethod
    def load_from_project(cls) -> "Options":
        """Try to load options from a pyretailscience.toml file in the project root directory.

        If the project root directory cannot be found, return a default Options instance.

        Returns:
            An Options instance with options loaded from the pyretailscience.toml file or default
        """
        options_instance = cls()

        project_root = find_project_root()
        if project_root is None:
            return options_instance

        toml_file = Path(project_root) / "pyretailscience.toml"
        if toml_file.is_file():
            return Options.load_from_toml(toml_file)

        return options_instance

    @classmethod
    def load_from_toml(cls, file_path: str) -> "Options":
        """Load options from a TOML file.

        Args:
            file_path: The path to the TOML file.

        Raises:
            ValueError: If the TOML file contains unknown options.
        """
        options_instance = cls()

        with open(file_path) as f:
            toml_data = toml.load(f)

        for section, options in toml_data.items():
            for option_name, option_value in Options.flatten_options(section, options).items():
                if option_name in options_instance._options:
                    options_instance.set_option(option_name, option_value)
                else:
                    msg = f"Unknown option in TOML file: {option_name}"
                    raise ValueError(msg)

        return options_instance

__init__()

Initializes the options with default values.

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def __init__(self) -> None:
    """Initializes the options with default values."""
    self._options: dict[str, OptionTypes] = {
        # Database columns
        "column.customer_id": "customer_id",
        "column.transaction_id": "transaction_id",
        "column.transaction_date": "transaction_date",
        "column.transaction_time": "transaction_time",
        "column.product_id": "product_id",
        "column.unit_quantity": "unit_quantity",
        "column.unit_price": "unit_price",
        "column.unit_spend": "unit_spend",
        "column.unit_cost": "unit_cost",
        "column.promo_unit_spend": "promo_unit_spend",
        "column.promo_unit_quantity": "promo_unit_quantity",
        "column.store_id": "store_id",
        # Aggregation columns
        "column.agg.customer_id": "customers",
        "column.agg.transaction_id": "transactions",
        "column.agg.product_id": "products",
        "column.agg.unit_quantity": "units",
        "column.agg.unit_price": "prices",
        "column.agg.unit_spend": "spend",
        "column.agg.unit_cost": "costs",
        "column.agg.promo_unit_spend": "promo_spend",
        "column.agg.promo_unit_quantity": "promo_units",
        "column.agg.store_id": "stores",
        # Calculated columns
        "column.calc.price_per_unit": "price_per_unit",
        "column.calc.units_per_transaction": "units_per_transaction",
        "column.calc.spend_per_customer": "spend_per_customer",
        "column.calc.spend_per_transaction": "spend_per_transaction",
        "column.calc.transactions_per_customer": "transactions_per_customer",
        "column.calc.price_elasticity": "price_elasticity",
        "column.calc.frequency_elasticity": "frequency_elasticity",
        # Abbreviation suffix
        "column.suffix.count": "cnt",
        "column.suffix.percent": "pct",
        "column.suffix.difference": "diff",
        "column.suffix.percent_difference": "pct_diff",
        "column.suffix.contribution": "contrib",
        "column.suffix.period_1": "p1",
        "column.suffix.period_2": "p2",
        "column.suffix.unknown_customer": "unknown",
        "column.suffix.total": "total",
        # Color palettes
        "plot.color.mono_palette": [
            COLORS["green"][500],
            COLORS["green"][300],
            COLORS["green"][700],
        ],
        "plot.color.multi_color_palette": [
            COLORS[color][shade]
            for shade in [500, 300, 700]
            for color in ["green", "blue", "red", "orange", "yellow", "violet", "pink"]
        ],
        "plot.color.positive": COLORS["green"][500],
        "plot.color.negative": COLORS["red"][500],
        "plot.color.neutral": COLORS["gray"][500],
        "plot.color.difference": COLORS["blue"][500],
        "plot.color.context": COLORS["gray"][400],
        "plot.color.primary": COLORS["green"][500],
        "plot.color.heatmap": "green",
        # Plot font options
        "plot.font.title_font": "poppins_semi_bold",
        "plot.font.label_font": "poppins_regular",
        "plot.font.tick_font": "poppins_regular",
        "plot.font.source_font": "poppins_light_italic",
        "plot.font.data_label_font": "poppins_regular",
        "plot.font.title_size": 20.0,
        "plot.font.label_size": 12.0,
        "plot.font.tick_size": 10.0,
        "plot.font.source_size": 10.0,
        "plot.font.data_label_size": 8.0,
        # Plot spacing options
        "plot.spacing.title_pad": 10,
        "plot.spacing.x_label_pad": 10,
        "plot.spacing.y_label_pad": 10,
        # Plot style options
        "plot.style.background_color": "white",
        "plot.style.grid_color": "#DAD8D7",
        "plot.style.grid_alpha": 0.5,
        "plot.style.show_top_spine": False,
        "plot.style.show_right_spine": False,
        "plot.style.show_bottom_spine": True,
        "plot.style.show_left_spine": True,
        "plot.style.legend_bbox_to_anchor": [1.05, 1.0],
        "plot.style.legend_loc": "upper left",
    }
    self._descriptions: dict[str, str] = {
        # Database columns
        "column.customer_id": "The name of the column containing customer IDs.",
        "column.transaction_id": "The name of the column containing transaction IDs.",
        "column.transaction_date": "The name of the column containing transaction dates.",
        "column.transaction_time": "The name of the column containing transaction times.",
        "column.product_id": "The name of the column containing product IDs.",
        "column.unit_quantity": "The name of the column containing the number of units sold.",
        "column.unit_price": "The name of the column containing the unit price of the product.",
        "column.unit_spend": (
            "The name of the column containing the total spend of the products in the transaction."
            "ie, unit_price * units",
        ),
        "column.unit_cost": (
            "The name of the column containing the total cost of the products in the transaction. "
            "ie, single unit cost * units",
        ),
        "column.promo_unit_spend": (
            "The name of the column containing the total spend on promotion of the products in the transaction. "
            "ie, promotional unit price * units",
        ),
        "column.promo_unit_quantity": ("The name of the column containing the number of units sold on promotion."),
        "column.store_id": "The name of the column containing store IDs of the transaction.",
        # Aggregation columns
        "column.agg.customer_id": "The name of the column containing the number of unique customers.",
        "column.agg.transaction_id": "The name of the column containing the number of transactions.",
        "column.agg.product_id": "The name of the column containing the number of unique products.",
        "column.agg.unit_quantity": "The name of the column containing the total number of units sold.",
        "column.agg.unit_price": "The name of the column containing the total unit price of products.",
        "column.agg.unit_spend": (
            "The name of the column containing the total spend of the units in the transaction."
        ),
        "column.agg.unit_cost": "The name of the column containing the total unit cost of products.",
        "column.agg.promo_unit_spend": (
            "The name of the column containing the total promotional spend of the units in the transaction."
        ),
        "column.agg.promo_unit_quantity": (
            "The name of the column containing the total number of units sold on promotion."
        ),
        "column.agg.store_id": "The name of the column containing the number of unique stores.",
        # Calculated columns
        "column.calc.price_per_unit": "The name of the column containing the price per unit.",
        "column.calc.units_per_transaction": "The name of the column containing the units per transaction.",
        "column.calc.spend_per_customer": "The name of the column containing the spend per customer.",
        "column.calc.spend_per_transaction": "The name of the column containing the spend per transaction.",
        "column.calc.transactions_per_customer": "The name of the column containing the transactions per customer.",
        "column.calc.price_elasticity": "The name of the column containing the price elasticity calculation.",
        "column.calc.frequency_elasticity": "The name of the column containing the price frequency calculation.",
        # Abbreviation suffixes
        "column.suffix.count": "The suffix to use for count columns.",
        "column.suffix.percent": "The suffix to use for percentage columns.",
        "column.suffix.difference": "The suffix to use for difference columns.",
        "column.suffix.percent_difference": "The suffix to use for percentage difference columns.",
        "column.suffix.contribution": "The suffix to use for revenue contribution columns.",
        "column.suffix.period_1": (
            "The suffix to use for period 1 columns. Often this could represent last year for instance."
        ),
        "column.suffix.period_2": (
            "The suffix to use for period 2 columns. Often this could represent this year for instance."
        ),
        "column.suffix.unknown_customer": "The suffix to use for unknown customer columns.",
        "column.suffix.total": "The suffix to use for total columns.",
        # Color options
        "plot.color.mono_palette": "Monochromatic palette for plots with few series (default: 3 green shades). Set to [] to disable.",
        "plot.color.multi_color_palette": "Multi-color palette for plots with many series (default: 21 Tailwind colors)",
        "plot.color.positive": "Color for positive values (e.g., gains, increases)",
        "plot.color.negative": "Color for negative values (e.g., losses, decreases)",
        "plot.color.neutral": "Color for neutral values (e.g., net amounts)",
        "plot.color.difference": "Color for difference values (e.g., waterfall transitions, tree differences)",
        "plot.color.context": "Color for de-emphasized context lines",
        "plot.color.primary": "Default color for single-series plots",
        "plot.color.heatmap": "Tailwind color name (e.g., 'green', 'blue') or matplotlib colormap name (e.g., 'Greens', 'viridis') for heatmaps",
        # Plot font descriptions
        "plot.font.title_font": "The font family to use for plot titles.",
        "plot.font.label_font": "The font family to use for axis labels.",
        "plot.font.tick_font": "The font family to use for axis tick labels.",
        "plot.font.source_font": "The font family to use for source text.",
        "plot.font.data_label_font": "The font family to use for data point labels.",
        "plot.font.title_size": "The font size for plot titles (in points).",
        "plot.font.label_size": "The font size for axis labels (in points).",
        "plot.font.tick_size": "The font size for axis tick labels (in points).",
        "plot.font.source_size": "The font size for source text (in points).",
        "plot.font.data_label_size": "The font size for data point labels (in points).",
        # Plot spacing descriptions
        "plot.spacing.title_pad": "The padding above the title (in points).",
        "plot.spacing.x_label_pad": "The padding below the x-axis label (in points).",
        "plot.spacing.y_label_pad": "The padding to the left of the y-axis label (in points).",
        # Plot style descriptions
        "plot.style.background_color": "The background color of the plot area.",
        "plot.style.grid_color": "The color of the grid lines.",
        "plot.style.grid_alpha": "The transparency of the grid lines (0.0 to 1.0).",
        "plot.style.show_top_spine": "Whether to show the top border of the plot.",
        "plot.style.show_right_spine": "Whether to show the right border of the plot.",
        "plot.style.show_bottom_spine": "Whether to show the bottom border of the plot.",
        "plot.style.show_left_spine": "Whether to show the left border of the plot.",
        "plot.style.legend_bbox_to_anchor": "The bounding box anchor for legend positioning when moved outside.",
        "plot.style.legend_loc": "The location of the legend when moved outside the plot.",
    }
    self._default_options: dict[str, OptionTypes] = self._options.copy()

describe_option(pat)

Describe the specified option.

Parameters:

Name Type Description Default
pat str

The option name.

 required

Returns:

Type Description
str

A string describing the option and its current value.

Raises:

Type Description
ValueError

If the option name is unknown.
Source code in pyretailscience/options.py 
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def describe_option(self, pat: str) -> str:
    """Describe the specified option.

    Args:
        pat: The option name.

    Returns:
        A string describing the option and its current value.

    Raises:
        ValueError: If the option name is unknown.
    """
    if pat in self._descriptions:
        return f"{pat}: {self._descriptions[pat]} (current value: {self._options[pat]})"

    msg = f"Unknown option: {pat}"
    raise ValueError(msg)

flatten_options(k, v, parent_key='') staticmethod

Flatten nested options into a single dictionary.

Source code in pyretailscience/options.py 
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@staticmethod
def flatten_options(k: str, v: OptionTypes, parent_key: str = "") -> dict[str, OptionTypes]:
    """Flatten nested options into a single dictionary."""
    if parent_key != "":
        parent_key += "."

    if isinstance(v, dict):
        ret_dict = {}
        for sub_key, sub_value in v.items():
            ret_dict.update(Options.flatten_options(sub_key, sub_value, parent_key=f"{parent_key}{k}"))
        return ret_dict

    return {f"{parent_key}{k}": v}

get_option(pat)

Get the value of the specified option.

Parameters:

Name Type Description Default
pat str

The option name.

 required

Returns:

Type Description
OptionTypes

The value of the option.

Raises:

Type Description
ValueError

If the option name is unknown.
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def get_option(self, pat: str) -> OptionTypes:
    """Get the value of the specified option.

    Args:
        pat: The option name.

    Returns:
        The value of the option.

    Raises:
        ValueError: If the option name is unknown.
    """
    if pat in self._options:
        return self._options[pat]

    msg = f"Unknown option: {pat}"
    raise ValueError(msg)

list_options()

List all available options.

Returns:

Type Description
list[str]

A list of all option names.
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def list_options(self) -> list[str]:
    """List all available options.

    Returns:
        A list of all option names.
    """
    return list(self._options.keys())

load_from_project() classmethod

Try to load options from a pyretailscience.toml file in the project root directory.

If the project root directory cannot be found, return a default Options instance.

Returns:

Type Description
Options

An Options instance with options loaded from the pyretailscience.toml file or default
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@classmethod
def load_from_project(cls) -> "Options":
    """Try to load options from a pyretailscience.toml file in the project root directory.

    If the project root directory cannot be found, return a default Options instance.

    Returns:
        An Options instance with options loaded from the pyretailscience.toml file or default
    """
    options_instance = cls()

    project_root = find_project_root()
    if project_root is None:
        return options_instance

    toml_file = Path(project_root) / "pyretailscience.toml"
    if toml_file.is_file():
        return Options.load_from_toml(toml_file)

    return options_instance

load_from_toml(file_path) classmethod

Load options from a TOML file.

Parameters:

Name Type Description Default
file_path str

The path to the TOML file.

 required

Raises:

Type Description
ValueError

If the TOML file contains unknown options.
Source code in pyretailscience/options.py 
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@classmethod
def load_from_toml(cls, file_path: str) -> "Options":
    """Load options from a TOML file.

    Args:
        file_path: The path to the TOML file.

    Raises:
        ValueError: If the TOML file contains unknown options.
    """
    options_instance = cls()

    with open(file_path) as f:
        toml_data = toml.load(f)

    for section, options in toml_data.items():
        for option_name, option_value in Options.flatten_options(section, options).items():
            if option_name in options_instance._options:
                options_instance.set_option(option_name, option_value)
            else:
                msg = f"Unknown option in TOML file: {option_name}"
                raise ValueError(msg)

    return options_instance

reset_option(pat)

Reset the specified option to its default value.

Parameters:

Name Type Description Default
pat str

The option name.

 required

Raises:

Type Description
ValueError

If the option name is unknown.
Source code in pyretailscience/options.py 
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def reset_option(self, pat: str) -> None:
    """Reset the specified option to its default value.

    Args:
        pat: The option name.

    Raises:
        ValueError: If the option name is unknown.
    """
    if pat not in self._options:
        msg = f"Unknown option: {pat}"
        raise ValueError(msg)

    self._options[pat] = self._default_options[pat]

set_option(pat, val)

Set the value of the specified option.

Parameters:

Name Type Description Default
pat str

The option name.

 required
val OptionTypes

The value to set the option to.

 required

Raises:

Type Description
ValueError

If the option name is unknown.
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def set_option(self, pat: str, val: OptionTypes) -> None:
    """Set the value of the specified option.

    Args:
        pat: The option name.
        val: The value to set the option to.

    Raises:
        ValueError: If the option name is unknown.
    """
    if pat not in self._options:
        msg = f"Unknown option: {pat}"
        raise ValueError(msg)

    self._options[pat] = val

PlotStyleHelper

A class to help with plot styling options.

Access patterns: - Font options: style.title_font, style.title_size, etc. - Spacing options: style.title_pad, style.x_label_pad, etc. - Style options: style.background_color, style.grid_alpha, etc.

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class PlotStyleHelper:
    """A class to help with plot styling options.

    Access patterns:
    - Font options: style.title_font, style.title_size, etc.
    - Spacing options: style.title_pad, style.x_label_pad, etc.
    - Style options: style.background_color, style.grid_alpha, etc.
    """

    def __init__(self) -> None:
        """Initialize plot style helper with font, spacing, and style options."""
        # Font options
        self.title_font: str = get_option("plot.font.title_font")
        self.label_font: str = get_option("plot.font.label_font")
        self.tick_font: str = get_option("plot.font.tick_font")
        self.source_font: str = get_option("plot.font.source_font")
        self.data_label_font: str = get_option("plot.font.data_label_font")
        self.title_size: float = get_option("plot.font.title_size")
        self.label_size: float = get_option("plot.font.label_size")
        self.tick_size: float = get_option("plot.font.tick_size")
        self.source_size: float = get_option("plot.font.source_size")
        self.data_label_size: float = get_option("plot.font.data_label_size")

        # Spacing options
        self.title_pad: int = get_option("plot.spacing.title_pad")
        self.x_label_pad: int = get_option("plot.spacing.x_label_pad")
        self.y_label_pad: int = get_option("plot.spacing.y_label_pad")

        # Style options
        self.background_color: str = get_option("plot.style.background_color")
        self.grid_color: str = get_option("plot.style.grid_color")
        self.grid_alpha: float = get_option("plot.style.grid_alpha")
        self.show_top_spine: bool = get_option("plot.style.show_top_spine")
        self.show_right_spine: bool = get_option("plot.style.show_right_spine")
        self.show_bottom_spine: bool = get_option("plot.style.show_bottom_spine")
        self.show_left_spine: bool = get_option("plot.style.show_left_spine")
        self.legend_bbox_to_anchor: list = get_option("plot.style.legend_bbox_to_anchor")
        self.legend_loc: str = get_option("plot.style.legend_loc")

__init__()

Initialize plot style helper with font, spacing, and style options.

Source code in pyretailscience/options.py 
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def __init__(self) -> None:
    """Initialize plot style helper with font, spacing, and style options."""
    # Font options
    self.title_font: str = get_option("plot.font.title_font")
    self.label_font: str = get_option("plot.font.label_font")
    self.tick_font: str = get_option("plot.font.tick_font")
    self.source_font: str = get_option("plot.font.source_font")
    self.data_label_font: str = get_option("plot.font.data_label_font")
    self.title_size: float = get_option("plot.font.title_size")
    self.label_size: float = get_option("plot.font.label_size")
    self.tick_size: float = get_option("plot.font.tick_size")
    self.source_size: float = get_option("plot.font.source_size")
    self.data_label_size: float = get_option("plot.font.data_label_size")

    # Spacing options
    self.title_pad: int = get_option("plot.spacing.title_pad")
    self.x_label_pad: int = get_option("plot.spacing.x_label_pad")
    self.y_label_pad: int = get_option("plot.spacing.y_label_pad")

    # Style options
    self.background_color: str = get_option("plot.style.background_color")
    self.grid_color: str = get_option("plot.style.grid_color")
    self.grid_alpha: float = get_option("plot.style.grid_alpha")
    self.show_top_spine: bool = get_option("plot.style.show_top_spine")
    self.show_right_spine: bool = get_option("plot.style.show_right_spine")
    self.show_bottom_spine: bool = get_option("plot.style.show_bottom_spine")
    self.show_left_spine: bool = get_option("plot.style.show_left_spine")
    self.legend_bbox_to_anchor: list = get_option("plot.style.legend_bbox_to_anchor")
    self.legend_loc: str = get_option("plot.style.legend_loc")

describe_option(pat)

Describe the specified option.

This is a global function that delegates to the _global_options instance.

Parameters:

Name Type Description Default
pat str

The option name.

 required

Returns:

Type Description
str

A string describing the option and its current value.

Raises:

Type Description
ValueError

If the option name is unknown.
Source code in pyretailscience/options.py 
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def describe_option(pat: str) -> str:
    """Describe the specified option.

    This is a global function that delegates to the _global_options instance.

    Args:
        pat: The option name.

    Returns:
        A string describing the option and its current value.

    Raises:
        ValueError: If the option name is unknown.
    """
    return _global_options.describe_option(pat)

find_project_root() cached

Returns the directory containing .git, .hg, or pyproject.toml, starting from the current working directory.

Source code in pyretailscience/options.py 
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@lru_cache
def find_project_root() -> str | None:
    """Returns the directory containing .git, .hg, or pyproject.toml, starting from the current working directory."""
    current_dir = Path.cwd()

    while True:
        if (Path(current_dir / ".git")).is_dir() or (Path(current_dir / "pyretailscience.toml")).is_file():
            return current_dir

        parent_dir = Path(current_dir).parent
        reached_root = parent_dir == current_dir
        if reached_root:
            return None

        current_dir = parent_dir

get_option(pat)

Get the value of the specified option.

This is a global function that delegates to the _global_options instance.

Parameters:

Name Type Description Default
pat str

The option name.

 required

Returns:

Type Description
OptionTypes

The value of the option.

Raises:

Type Description
ValueError

If the option name is unknown.
Source code in pyretailscience/options.py 
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def get_option(pat: str) -> OptionTypes:
    """Get the value of the specified option.

    This is a global function that delegates to the _global_options instance.

    Args:
        pat: The option name.

    Returns:
        The value of the option.

    Raises:
        ValueError: If the option name is unknown.
    """
    return _global_options.get_option(pat)

list_options()

List all available options.

This is a global function that delegates to the _global_options instance.

Returns:

Type Description
list[str]

A list of all option names.
Source code in pyretailscience/options.py 
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def list_options() -> list[str]:
    """List all available options.

    This is a global function that delegates to the _global_options instance.

    Returns:
        A list of all option names.
    """
    return _global_options.list_options()

option_context(*args)

Context manager to temporarily set options.

Temporarily set options and restore them to their previous values after the context exits. The arguments should be supplied as alternating option names and values.

Parameters:

Name Type Description Default
*args OptionTypes

An even number of arguments, alternating between option names (str) and their corresponding values.

 ()

Yields:

Type Description
Generator[None, None, None]

None

Raises:

Type Description
ValueError

If an odd number of arguments is supplied.
Example

with option_context('display.max_rows', 10, 'display.max_columns', 5): ... # Do something with modified options ... pass

Options are restored to their previous values here

Source code in pyretailscience/options.py 
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@contextmanager
def option_context(*args: OptionTypes) -> Generator[None, None, None]:
    """Context manager to temporarily set options.

    Temporarily set options and restore them to their previous values after the
    context exits. The arguments should be supplied as alternating option names
    and values.

    Args:
        *args: An even number of arguments, alternating between option names (str)
               and their corresponding values.

    Yields:
        None

    Raises:
        ValueError: If an odd number of arguments is supplied.

    Example:
        >>> with option_context('display.max_rows', 10, 'display.max_columns', 5):
        ...     # Do something with modified options
        ...     pass
        >>> # Options are restored to their previous values here
    """
    if len(args) % 2 != 0:
        raise ValueError("The context manager requires an even number of arguments")

    old_options: dict[str, OptionTypes] = {}
    try:
        for pat, val in zip(args[::2], args[1::2], strict=True):
            old_options[pat] = get_option(pat)
            set_option(pat, val)
        yield
    finally:
        for pat, val in old_options.items():
            set_option(pat, val)

reset_option(pat)

Reset the specified option to its default value.

This is a global function that delegates to the _global_options instance.

Parameters:

Name Type Description Default
pat str

The option name.

 required

Raises:

Type Description
ValueError

If the option name is unknown.
Source code in pyretailscience/options.py 
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def reset_option(pat: str) -> None:
    """Reset the specified option to its default value.

    This is a global function that delegates to the _global_options instance.

    Args:
        pat: The option name.

    Raises:
        ValueError: If the option name is unknown.
    """
    _global_options.reset_option(pat)

set_option(pat, val)

Set the value of the specified option.

This is a global function that delegates to the _global_options instance.

Parameters:

Name Type Description Default
pat str

The option name.

 required
val OptionTypes

The value to set the option to.

 required

Raises:

Type Description
ValueError

If the option name is unknown.
Source code in pyretailscience/options.py 
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def set_option(pat: str, val: OptionTypes) -> None:
    """Set the value of the specified option.

    This is a global function that delegates to the _global_options instance.

    Args:
        pat: The option name.
        val: The value to set the option to.

    Raises:
        ValueError: If the option name is unknown.
    """
    _global_options.set_option(pat, val)