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This module provides an interface to the native time zone data on Windows,
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including :py:class:`datetime.tzinfo` implementations.
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Attempting to import this module on a non-Windows platform will raise an
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:py:obj:`ImportError`.
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é N)Úwinreg)Ú text_type)Úwintypesz#Running tzwin on non-Windows systemé )Ú tzrangebaseÚtzwinÚ
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tzwinlocalÚtzresé 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
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r> t}Y nX | ¡ |S ©N)r ÚConnectRegistryÚHKEY_LOCAL_MACHINEÚOpenKeyÚ TZKEYNAMENTÚCloseÚ WindowsErrorÚ TZKEYNAME9X)ÚhandleÚ TZKEYNAME© r úFd:\z\workplace\vscode\pyvenv\venv\Lib\site-packages\dateutil/tz/win.pyÚ _settzkeyname" s
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Class for accessing ``tzres.dll``, which contains timezone name related
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resources.
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.. versionadded:: 2.5.0
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ú tzres.dllc C s@ t d¡}tjtjtjt jf|j_|j| _t |¡| _ || _
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Load a timezone name from a DLL offset (integer).
|
|
>>> from dateutil.tzwin import tzres
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>>> tzr = tzres()
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>>> print(tzr.load_name(112))
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'Eastern Standard Time'
|
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:param offset:
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A positive integer value referring to a string from the tzres dll.
|
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.. note::
|
|
Offsets found in the registry are generally of the form
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``@tzres.dll,-114``. The offset in this case is 114, not -114.
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r N) Úp_wcharr ÚcastÚbyrefr r r r" Ú_handle)r$ ÚoffsetÚresourceZlpBufferZncharr r r Ú load_nameG s ztzres.load_namec C sH | d¡s|S | d¡}zt|d }W n tdY nX | |¡S )a
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Parse strings as returned from the Windows registry into the time zone
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name as defined in the registry.
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|
>>> from dateutil.tzwin import tzres
|
>>> tzr = tzres()
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>>> print(tzr.name_from_string('@tzres.dll,-251'))
|
'Dateline Daylight Time'
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>>> print(tzr.name_from_string('Eastern Standard Time'))
|
'Eastern Standard Time'
|
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: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
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is of the form `@tzres.dll,-offset`, else returns the input 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 ÚEnumKey)Ú.0Úi©Útzkeyr r Ú
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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
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always on the standard time side. For zones with no transitions, this
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function returns ``None``.
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:param year:
|
The year whose transitions you would like to query.
|
|
:return:
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Returns a :class:`tuple` of :class:`datetime.datetime` objects,
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``(dston, dstoff)`` for zones with an annual DST transition, or
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Time zone object created from the zone info in the Windows registry
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These are similar to :py:class:`dateutil.tz.tzrange` objects in that
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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
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The name of a Windows time zone key, e.g. "Eastern Standard Time".
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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
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While :class:`dateutil.tz.tzlocal` makes system calls (via the :mod:`time`
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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
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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`.
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Because ``tzwinlocal`` reads the registry directly, it is unaffected by
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this issue.
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