>>> import datetime >>> dir(datetime) ['MAXYEAR', 'MINYEAR', '__doc__', '__file__', '__name__', '__package__', 'date', 'datetime', 'datetime_CAPI', 'time', 'timedelta', 'tzinfo'] >>> datetime.datetime.now() datetime.datetime(2015, 5, 11, 17, 29, 14, 476759)
Python格式化日期时间的函数为datetime.datetime.strftime()；
由字符串转为日期型的函数为：datetime.datetime.strptime()，两个函数都涉及日期时间的格式化字符串，列举如下：
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%a |
Abbreviated weekday name |
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%A |
Full weekday name |
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%b |
Abbreviated month name |
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%B |
Full month name |
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%c |
Date and time representation appropriatefor locale |
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%d |
Day of month as decimal number (01 - 31) |
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%H |
Hour in 24-hour format (00 - 23) |
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%I |
Hour in 12-hour format (01 - 12) |
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%j |
Day of year as decimal number (001 - 366) |
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%m |
Month as decimal number (01 - 12) |
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%M |
Minute as decimal number (00 - 59) |
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%p |
Current locale‘s A.M./P.M. indicator for 12-hour clock |
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%S |
Second as decimal number (00 - 59) |
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%U |
Week of year as decimal number,with Sunday as first day of week (00 - 51) |
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%w |
Weekday as decimal number (0 - 6;Sunday is 0) |
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%W |
Week of year as decimal number,with Monday as first day of week (00 - 51) |
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%x |
Date representation for current locale |
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%X |
Time representation for current locale |
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%y |
Year without century, as decimal number (00 - 99) |
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%Y |
Year with century, as decimal number |
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%z,%Z |
Time-zone name or abbreviation; no characters if time zone is unknown |
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%% |
Percent sign |
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举一个例子：
ebay中时间格式为‘Sep-21-09 16:34’
则通过下面代码将这个字符串转换成datetime
>>> c = datetime.datetime.strptime('Sep-21-09 16:34','%b-%d-%y %H:%M');
>>> c
datetime.datetime(2009, 9, 21, 16, 34)
又如：datetime转换成字符串
>>> datetime.datetime.now().strftime('%b-%d-%y %H:%M:%S')
'May-11-15 17:29:29'原文地址：http://blog.csdn.net/muzilanlan/article/details/45647333
