如何使用 Python 验证特定的日期和时间格式

问题描述

我正在编写一个程序来验证 XML 文件的某些部分.我要验证的要点之一是日期时间格式.我已经在论坛上阅读了有关使用 time.strptime() 的信息，但是这些示例对我来说不太适用，并且超出了我的专业知识.任何人都知道如何验证以下内容.这是日期和时间必须采用的格式.

I am writing a program to validate portions of an XML file. One of the points I would like to validate is a Date Time format. I've read up on the forum about using time.strptime() but the examples weren't quite working for me and were a little over my expertise. Anyone have any ideas how I could validate the following. This is the format the date and time must be in.

2/26/2009 3:00 PM

我确信有一些内置的并且非常简单，但我找不到.非常感谢您之前运行过此操作并提出建议.

I am sure there is something built-in and very easy but I can't find. Many thanks if you've run by this before and have suggestions.

推荐答案

是的，你可以使用 datetime.strptime():

Yes, you can use datetime.strptime():

from datetime import datetime


def validate_date(d):
    try:
        datetime.strptime(d, '%m/%d/%Y %I:%M %p')
        return True
    except ValueError:
        return False


print validate_date('2/26/2009 3:00 PM')  # prints True
print validate_date('2/26/2009 13:00 PM')  # prints false
print validate_date('2/26/2009')  # prints False
print validate_date("Should I use regex for validating dates in Python?")  # prints False

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