U Òøïc’ ã@s@dZddlmZmZddlmZdadd„Zdd„Zd d „Z dS) zv This module contains helper functions to ease the transition from ``pytz`` to another :pep:`495`-compatible library. é)Ú_commonÚ_compat)Ú_PytzShimTimezoneNcCs$t ¡s dStdkrtƒt|tƒS)a!Check if a time zone is a ``pytz`` time zone. This will only import ``pytz`` if it has already been imported, and does not rely on the existence of the ``localize`` or ``normalize`` methods (since the shim classes also have these methods, but are not ``pytz`` zones). FN)rZ pytz_importedÚ_PYTZ_BASE_CLASSESÚ_populate_pytz_base_classesÚ isinstance)Útz©r úA/tmp/pip-unpacked-wheel-pe1vybbg/pytz_deprecation_shim/helpers.pyÚ is_pytz_zone s r cCsbt|tƒr|jSt|ƒr^|jdkrB| d¡}| ¡d}t |¡S|jdkrRtj St  |j¡S|S)a Convert a ``pytz`` or shim timezone into its modern equivalent. The shim classes are thin wrappers around :mod:`zoneinfo` or :mod:`dateutil.tz` implementations of the :class:`datetime.tzinfo` base class. This function removes the shim and returns the underlying "upgraded" time zone. When passed a ``pytz`` zone (not a shim), this returns the non-``pytz`` equivalent. This may fail if ``pytz`` is using a data source incompatible with the upgraded provider's data source, or if the ``pytz`` zone was built from a file rather than an IANA key. When passed an object that is not a shim or a ``pytz`` zone, this returns the original object. :param tz: A :class:`datetime.tzinfo` object. :raises KeyError: If a ``pytz`` zone is passed to the function with no equivalent in the :pep:`495`-compatible library's version of the Olson database. :return: A :pep:`495`-compatible equivalent of any ``pytz`` or shim class, or the original object. Né<ÚUTC) rrZ_zoner ÚzoneÚ utcoffsetÚ total_secondsrZget_fixed_offset_zoner Z get_timezone)rÚoffsetZoffset_minutesr r r Úupgrade_tzinfo!s       rcCsBddl}ddlm}||jf}t|j|ƒs:|t|jƒf}|adS)Né)Ú BaseTzInfo)ÚpytzZ pytz.tzinforZ _FixedOffsetrr Útyper)rrZ base_classesr r r rOs    r) Ú__doc__ÚrrÚ_implrrr rrr r r r Ús  .