我有一个日期时间字符串，我不知道如何在 Python 中解析它。
字符串是这样的：
Tue May 08 15:14:45 +0800 2012
我试过了
datetime.strptime("Tue May 08 15:14:45 +0800 2012","%a %b %d %H:%M:%S %z %Y")
但是Python提出了
'z' is a bad directive in format '%a %b %d %H:%M:%S %z %Y'
根据 Python 文档：
%z UTC 偏移量，格式为 +HHMM 或 -HHMM（如果对象是幼稚的，则为空字符串）。
解析这个时间字符串的正确格式是什么？
datetime.datetime.strptime has problems with timezone parsing. Have a look at the dateutil package:
>>> from dateutil import parser
>>> parser.parse("Tue May 08 15:14:45 +0800 2012")
datetime.datetime(2012, 5, 8, 15, 14, 45, tzinfo=tzoffset(None, 28800))
Your best bet is to have a look at strptime()
Something along the lines of
>>> from datetime import datetime
>>> date_str = 'Tue May 08 15:14:45 +0800 2012'
>>> date = datetime.strptime(date_str, '%a %B %d %H:%M:%S +0800 %Y')
>>> date
datetime.datetime(2012, 5, 8, 15, 14, 45)
Im not sure how to do the +0800 timezone unfortunately, maybe someone else can help out with that.
The formatting strings can be found at http://docs.python.org/library/time.html#time.strftime and are the same for formatting the string for printing.
Hope that helps
Mark
PS, Your best bet for timezones in installing pytz from pypi. ( http://pytz.sourceforge.net/ ) in fact I think pytz has a great datetime parsing method if i remember correctly. The standard lib is a little thin on the ground with timezone functionality.
这是一个 stdlib 解决方案，它支持输入时间字符串中的可变 utc 偏移量：
>>> from email.utils import parsedate_tz, mktime_tz
>>> from datetime import datetime, timedelta
>>> timestamp = mktime_tz(parsedate_tz('Tue May 08 15:14:45 +0800 2012'))
>>> utc_time = datetime(1970, 1, 1) + timedelta(seconds=timestamp)
>>> utc_time
datetime.datetime(2012, 5, 8, 7, 14, 45)
它已经在 SO 中讨论过很多次。简而言之，不支持“%z”，因为平台不支持。我的解决方案是一个新的，只是跳过时区。：
datetime.datetime.strptime(re.sub(r"[+-]([0-9])+", "", "Tue May 08 15:14:45 +0800 2012"),"%a %b %d %H:%M:%S %Y")
In [117]: datetime.datetime.strptime?
Type: builtin_function_or_method
Base Class: <type 'builtin_function_or_method'>
String Form: <built-in method strptime of type object at 0x9a2520>
Namespace: Interactive
Docstring:
string, format -> new datetime parsed from a string (like time.strptime()).