some new features

.venv/lib/python3.12/site-packages/holidays/helpers.py

@@ -0,0 +1,49 @@
+#  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 CONTRIBUTORS 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,)