python-Foundation-time-Date Processing summary (DateTime module)

When writing code, you will always encounter a variety of time processing and requirements. To summarize:

First of all, this article is a summary of the DateTime module.

Begin.

First, DateTime basic operation

1. Get the current datetime

1 times = datetime.datetime.now ()2 print time3# Output The following date-the hour (accurate to microseconds, 6 digits after decimal point)45 2018-01-11 20:19:34.794000

2. Get Date of day

1 time = datetime.date.today ()2 print time3# The output results are as follows:  45 2018-01-11

3. Get tomorrow/the first n days

Tomorrow

1 time = Datetime.date.today () +datetime.timedelta (Days=1)2print   time 3 # the output is: 4 5 2018-01-12

3 days ago

1 time = Datetime.date.today ()-datetime.timedelta (days=3)2print   time 3 # the output is: 4 5 2018-01-08

Second, the time of the data type conversion

1. DateTime type converted to String type

1 time = Datetime.datetime.now (). Strftime ('%y-%m-%d%h:%m:%s')2  Print  time3# output:45 2018-01-11 20:41:23

2. DateTime type is converted to date type (remember this notation, remove date is the exact time, plus date is the day)

1 time = Datetime.datetime.now (). Date ()2print  time3#  The output is:45 2018-01-11

Third, plus timedalta can be calculated in time (days)

Example:

1 time = Datetime.datetime.now (). Date ()-datetime.timedelta (days = 1)  #这里如果不写days默认也是days2  Print  time3# output:45 2018-01-10

End

The end version allows you to view the links below.

This digest from: http://www.wklken.me/posts/2015/03/03/python-base-datetime.html

Python-Foundation-time Date Processing summary (DateTime module)