The running time from the start of the python computing program to the end of the program and the CPU time of the program running

This article mainly introduces three methods of running time from the start of the python computing program to the end of the program and the CPU time of the program running. for details, refer to the execution time.

Method 1

The code is as follows:

Import datetime
Starttime = datetime. datetime. now ()
# Long running
Endtime = datetime. datetime. now ()
Print (endtime-starttime). seconds

Method 2

The code is as follows:

Start = time. time ()
Run_fun ()
End = time. time ()
Print end-start

Method 3

The code is as follows:

Start = time. clock ()
Run_fun ()
End = time. clock ()
Print end-start

Methods 1 and 2 both contain the CPU usage time of other programs, which is the running time from program start to program end.
Method 3 calculates only the CPU time for running the program.