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字典和确定变量[复制]
原标题:python reading from string and setting variable [duplicate]
  • 时间:2012-01-13 14:14:01
  •  标签:
  • python
  • time
This question already has answers here:
Closed 11 years ago.

Possible Duplicate:
Converting string into datetime

例:01

我想确定变量:hr = 12, min= 00,s= 01,t = AM。

请帮助我比较时间,我比较一下(例如:10 PM < 12:00:01 AM)。

带和带;产生的签字结果并不总是正确。

因此,我正试图通过制定可变变量来比较时间的法典。

但可以由任何职能直接提供。

Otherwise please help me out to set variables

问题回答

比较使用日期物体的日期和时间比较容易,而不是确定时间、分钟、秒等变量,以及进行计算。

http://docs.python.org/library/datetime.html 标准图书馆:

import datetime as dt

date1 = dt.datetime.strptime( 12:00:01 AM ,  %I:%M:%S %p )
date2 = dt.datetime.strptime( 1:10:01 PM ,  %I:%M:%S %p )   

print(date1)
# 1900-01-01 12:00:01

print(date2)
# 1900-01-01 13:10:01

print(date2 < date1)
# False

或,使用

import dateutil.parser as parser

date1 = parser.parse( 12:00:01 AM )
date2 = parser.parse( 1:10:00 PM )

print(date1)
# 2012-01-13 00:00:01

print(date2)
# 2012-01-13 13:10:00

print(date2 < date1)
# False

上述情况表明,没有必要为时间、分钟和秒数确定变量。 然而,从某一天开始便容易获得这些信息。 日期:

In [44]: x = dt.datetime.strptime( 12:00:01 AM ,  %I:%M:%S %p )

In [45]: x.hour, x.minute, x.second
Out[45]: (0, 0, 1)




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