如何验证字符串为正确的日期格式 [英] how to verified the string as correct date format

问题描述

我能知道验证字符串的最佳方法是在以下格式中吗？我不确定如何验证房屋和（上午或下午）

can I know the best way for me to verified the string is in the following formate. I am not sure how i should verified the house and (am or pm)

datestring = 'Feb 22 2017, 1:27:42pm'
print(datetime.strptime('Feb 22 2017, 1:27:42', '%b %d %Y, %H:%m:%S'))

推荐答案

您的主要问题实际上是％m 应该为％M 。小写的 m 是月份，而不是分钟。 ％p 将解析'am'和'pm' 。您可能还想将％H 更改为％I ，因为am / pm的存在意味着需要12小时制大于24：

Your main issue is actually that %m should be %M. Lowercase m is the month, not the minute. %p will parse 'am' and 'pm'. You may also want to change %H to %I since the presence of am/pm implies a 12 hour clock rather than 24:

datestring = 'Feb 22 2017, 1:27:42pm'
datetime.strptime(datestring, '%b %d %Y, %I:%M:%S%p')

结果在 datetime 对象中，该对象可以用我的语言环境/平台表示为 2017-02-22 13:27:42 默认值。

Results in a datetime object that can be represented as 2017-02-22 13:27:42 with my locale/platform defaults.

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