Source code for airflow.providers.standard.utils.weekday

# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.
"""Get the ISO standard day number of the week from a given day string."""

from __future__ import annotations

import enum
from collections.abc import Iterable


@enum.unique

[docs]
class WeekDay(enum.IntEnum):
    """Python Enum containing Days of the Week."""


[docs]
    MONDAY = 1


[docs]
    TUESDAY = 2


[docs]
    WEDNESDAY = 3


[docs]
    THURSDAY = 4


[docs]
    FRIDAY = 5


[docs]
    SATURDAY = 6


[docs]
    SUNDAY = 7


    @classmethod

[docs]
    def get_weekday_number(cls, week_day_str: str):
        """
        Return the ISO Week Day Number for a Week Day.

        :param week_day_str: Full Name of the Week Day. Example: "Sunday"
        :return: ISO Week Day Number corresponding to the provided Weekday
        """
        sanitized_week_day_str = week_day_str.upper()

        if sanitized_week_day_str not in cls.__members__:
            raise AttributeError(f'Invalid Week Day passed: "{week_day_str}"')

        return cls[sanitized_week_day_str]


    @classmethod

[docs]
    def convert(cls, day: str | WeekDay) -> int:
        """Return the day number in the week."""
        if isinstance(day, WeekDay):
            return day
        return cls.get_weekday_number(week_day_str=day)


    @classmethod

[docs]
    def validate_week_day(
        cls,
        week_day: str | WeekDay | Iterable[str] | Iterable[WeekDay],
    ) -> set[int]:
        """Validate each item of iterable and create a set to ease compare of values."""
        if not isinstance(week_day, Iterable):
            if isinstance(week_day, WeekDay):
                week_day = {week_day}
            else:
                raise TypeError(
                    f"Unsupported Type for week_day parameter: {type(week_day)}."
                    "Input should be iterable type:"
                    "str, set, list, dict or Weekday enum type"
                )
        if isinstance(week_day, str):
            week_day = {week_day}

        return {cls.convert(item) for item in week_day}