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This module provides an interface to the native time zone data on Windows,
including :py:class:`datetime.tzinfo` implementations.
Attempting to import this module on a non-Windows platform will raise an
:py:obj:`ImportError`.
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tzwinlocaltzres z7SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zonesz4SOFTWARE\Microsoft\Windows\CurrentVersion\Time Zonesz4SYSTEM\CurrentControlSet\Control\TimeZoneInformationc C sL t d t j} zt | t t}W n tk
r> t}Y nX | |S N)r ConnectRegistryHKEY_LOCAL_MACHINEOpenKey TZKEYNAMENTCloseZ WindowsError TZKEYNAME9X)handle TZKEYNAME r @/opt/alt/python38/lib/python3.8/site-packages/dateutil/tz/win.py
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Class for accessing ``tzres.dll``, which contains timezone name related
resources.
.. versionadded:: 2.5.0
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ztzres.__init__c C s< | }tt|tj}| | jj||d}|d| S )a
Load a timezone name from a DLL offset (integer).
>>> from dateutil.tzwin import tzres
>>> tzr = tzres()
>>> print(tzr.load_name(112))
'Eastern Standard Time'
:param offset:
A positive integer value referring to a string from the tzres dll.
.. note::
Offsets found in the registry are generally of the form
``@tzres.dll,-114``. The offset in this case is 114, not -114.
r N) p_wcharr castZbyrefr r r r Z_handle)r offsetresourceZlpBufferZncharr r r load_nameG s ztzres.load_namec C sH | ds|S |d}zt|d }W n tdY nX | |S )a
Parse strings as returned from the Windows registry into the time zone
name as defined in the registry.
>>> from dateutil.tzwin import tzres
>>> tzr = tzres()
>>> print(tzr.name_from_string('@tzres.dll,-251'))
'Dateline Daylight Time'
>>> print(tzr.name_from_string('Eastern Standard Time'))
'Eastern Standard Time'
:param tzname_str:
A timezone name string as returned from a Windows registry key.
:return:
Returns the localized timezone string from tzres.dll if the string
is of the form `@tzres.dll,-offset`, else returns the input string.
@z,-r zMalformed timezone string.)
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sV t dt j>} t | t& fddtt d D }W 5 Q R X W 5 Q R X |S )z4Return a list of all time zones known to the system.Nc s g | ]}t |qS r )r EnumKey).0itzkeyr r
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Return the display name of the time zone.
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For a given year, get the DST on and off transition times, expressed
always on the standard time side. For zones with no transitions, this
function returns ``None``.
:param year:
The year whose transitions you would like to query.
:return:
Returns a :class:`tuple` of :class:`datetime.datetime` objects,
``(dston, dstoff)`` for zones with an annual DST transition, or
``None`` for fixed offset zones.
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Time zone object created from the zone info in the Windows registry
These are similar to :py:class:`dateutil.tz.tzrange` objects in that
the time zone data is provided in the format of a single offset rule
for either 0 or 2 time zone transitions per year.
:param: name
The name of a Windows time zone key, e.g. "Eastern Standard Time".
The full list of keys can be retrieved with :func:`tzwin.list`.
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Class representing the local time zone information in the Windows registry
While :class:`dateutil.tz.tzlocal` makes system calls (via the :mod:`time`
module) to retrieve time zone information, ``tzwinlocal`` retrieves the
rules directly from the Windows registry and creates an object like
:class:`dateutil.tz.tzwin`.
Because Windows does not have an equivalent of :func:`time.tzset`, on
Windows, :class:`dateutil.tz.tzlocal` instances will always reflect the
time zone settings *at the time that the process was started*, meaning
changes to the machine's time zone settings during the run of a program
on Windows will **not** be reflected by :class:`dateutil.tz.tzlocal`.
Because ``tzwinlocal`` reads the registry directly, it is unaffected by
this issue.
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ztzwinlocal.__init__c C s dS )Nz tzwinlocal()r r2 r r r rq B s ztzwinlocal.__repr__c C s dt | j S )Nztzwinlocal(%s))rp r? r2 r r r __str__E s ztzwinlocal.__str__c C s
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