The Python calculation program starts at the end of the program and the CPU time the program runs _python

Execution time

Method 1

Copy Code code as follows:

Import datetime
StartTime = Datetime.datetime.now ()
#long Running
Endtime = Datetime.datetime.now ()
Print (endtime-starttime). seconds

Method 2

Copy Code code as follows:

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

Method 3

Copy Code code as follows:

Start = Time.clock ()
Run_fun ()
End = Time.clock ()
Print End-start

Methods 1 and 2 both contain the time that the other program uses the CPU, and the time that the program starts to run to the end of the program.
Method 3 calculates only the CPU time that the program is running