将datetime格式化为具有毫秒的字符串 [英] Format a datetime into a string with milliseconds

问题描述

我希望从毫秒的日期开始一个 datetime 字符串。这段代码对我来说是典型的，我很想学习如何缩短它。

I want to have a datetime string from the date with milliseconds. This code is typical for me and I'm eager to learn how to shorten it.

from datetime import datetime

timeformatted= str(datetime.utcnow())
semiformatted= timeformatted.replace("-","")
almostformatted= semiformatted.replace(":","")
formatted=almostformatted.replace(".","")
withspacegoaway=formatted.replace(" ","")
formattedstripped=withspacegoaway.strip()
print formattedstripped

推荐答案

OP要求一个带毫秒的字符串（后面3位小数）秒）。要获取毫秒数，请改用：

The OP asked for a string with milliseconds (3 decimal places behind seconds). To get milliseconds, use this instead:

from datetime import datetime

print datetime.utcnow().strftime('%Y-%m-%d %H:%M:%S.%f')[:-3]

>>>> OUTPUT >>>>
2013-08-23 10:18:32.926

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