Python - Measure time taken by program to execute

This article aims to show how to measure the time taken by the program to execute. Calculating time helps to optimize your Python script to perform better.

Approach #1 :
A simple solution to it is to use time module to get the current time. The following steps calculate the running time of a program or section of a program.

Store the starting time before the first line of the program executes.
Store the ending time after the last line of the program executes.
Print the difference between start time and end time.

Code #1 :

# Code to Measure time taken by program to execute. 
import time 
  
# store starting time 
begin = time.time() 
  
# program body starts 
  
for i in range(5): 
    print("GeeksForGeeks") 
# program body ends 
  
time.sleep(1) 
# store end time 
end = time.time() 
  
# total time taken 
print(f"Total runtime of the program is {end - begin}") 

Output:

GeeksForGeeks
GeeksForGeeks
GeeksForGeeks
GeeksForGeeks
GeeksForGeeks
Total runtime of the program is 1.0010437965393066

Approach #2 : Using Timeit module

# importing the required module  
import timeit  
  
# code snippet to be executed only once  
mysetup = "from math import sqrt"
  
# code snippet whose execution time is to be measured  
mycode = '''  
def example():  
    mylist = []  
    for x in range(100):  
        mylist.append(sqrt(x))  
'''
  
# timeit statement  
print timeit.timeit(setup = mysetup,  
                    stmt = mycode,  
                    number = 10000)  

Output:

0.00119590759277

Note: Output may vary depending on the system or server load.

To read more about Timeit modulule, refer – Timeit in Python with Examples

My Personal Notes

Python – Measure time taken by program to execute

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