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# holidays
# --------
# A fast, efficient Python library for generating country, province and state
# specific sets of holidays on the fly. It aims to make determining whether a
# specific date is a holiday as fast and flexible as possible.
#
# Authors: Vacanza Team and individual contributors (see AUTHORS.md file)
# dr-prodigy <dr.prodigy.github@gmail.com> (c) 2017-2023
# ryanss <ryanssdev@icloud.com> (c) 2014-2017
# Website: https://github.com/vacanza/holidays
# License: MIT (see LICENSE file)
def _normalize_arguments(cls, value):
"""Normalize arguments.
:param cls:
A type of arguments to normalize.
:param value:
Either a single item or an iterable of `cls` type.
:return:
A set created from `value` argument.
"""
if value is None:
return set()
if isinstance(value, str):
return {cls(value)}
try:
return {cls(v) for v in value}
except TypeError: # non-iterable
return {cls(value)}
def _normalize_tuple(value):
"""Normalize tuple.
:param data:
Either a tuple or a tuple of tuples.
:return:
An unchanged object for tuple of tuples, e.g., ((JAN, 10), (DEC, 31)).
An object put into a tuple otherwise, e.g., ((JAN, 10),).
"""
return value if not value or isinstance(value[0], tuple) else (value,)
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