python datetime.strptime() 为 %Z 接受哪些可能的值？
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What possible values does datetime.strptime() accept for %Z?
提问by mike
Python's datetime.strptime() is documented as supporting a timezone in the %Z field. So, for example:
Python 的 datetime.strptime() 被记录为支持 %Z 字段中的时区。因此，例如：
In [1]: datetime.strptime('2009-08-19 14:20:36 UTC', "%Y-%m-%d %H:%M:%S %Z")
Out[1]: datetime.datetime(2009, 8, 19, 14, 20, 36)
However, "UTC" seems to be the only timezone I can get it to support:
但是，“UTC”似乎是我可以让它支持的唯一时区：
In [2]: datetime.strptime('2009-08-19 14:20:36 EDT', "%Y-%m-%d %H:%M:%S %Z")
ValueError: time data '2009-08-19 14:20:36 EDT' does not match format '%Y-%m-%d %H:%M:%S %Z'
In [3]: datetime.strptime('2009-08-19 14:20:36 America/Phoenix', "%Y-%m-%d %H:%M:%S %Z")
ValueError: time data '2009-08-19 14:20:36 America/Phoenix' does not match format '%Y-%m-%d %H:%M:%S %Z'
In [4]: datetime.strptime('2009-08-19 14:20:36 -0700', "%Y-%m-%d %H:%M:%S %Z")
ValueError: time data '2009-08-19 14:20:36 -0700' does not match format '%Y-%m-%d %H:%M:%S %Z'
What format is it expecting for %Z? Or, how do I represent a timezone other than UTC?
%Z 期望什么格式？或者，我如何表示 UTC 以外的时区？
采纳答案by hughdbrown
I gather they are GMT, UTC, and whatever is listed in time.tzname.
我认为它们是 GMT、UTC 以及 time.tzname 中列出的任何内容。
>>> for t in time.tzname:
... print t
...
Eastern Standard Time
Eastern Daylight Time
>>> datetime.strptime('2009-08-19 14:20:36 Eastern Standard Time', "%Y-%m-%d %H:%M:%S %Z")
datetime.datetime(2009, 8, 19, 14, 20, 36)
>>> datetime.strptime('2009-08-19 14:20:36 UTC', "%Y-%m-%d %H:%M:%S %Z")
datetime.datetime(2009, 8, 19, 14, 20, 36)
>>> datetime.strptime('2009-08-19 14:20:36 GMT', "%Y-%m-%d %H:%M:%S %Z")
datetime.datetime(2009, 8, 19, 14, 20, 36)
These settings are machine-specific, of course, and yours will be different in all likelihood.
当然，这些设置是特定于机器的，您的设置很可能会有所不同。
回答by brianz
This is from the timemodule, but I'm almost certain it applies to datetime:
这是来自time模块，但我几乎可以肯定它适用于datetime：
Support for the %Z directive is based on the values contained in tzname and whether daylight is true. Because of this, it is platform-specific except for recognizing UTC and GMT which are always known (and are considered to be non-daylight savings timezones).
对 %Z 指令的支持基于 tzname 中包含的值以及 daylight 是否为真。因此，它是特定于平台的，除了识别始终已知的 UTC 和 GMT（并且被认为是非夏令时时区）。
https://docs.python.org/library/time.html
https://docs.python.org/library/time.html
On my system:
在我的系统上：
>>> import time
>>> time.tzname
('PST', 'PDT')
Using anything but these in datetime.strptime results in an exception. So, look to see what you have available on your machine.
在 datetime.strptime 中使用除这些之外的任何内容都会导致异常。所以，看看你的机器上有什么。
