how to calculate runtime in python code example

Example 1: how to record execution time in python

import time

start = time.time()
print("hello")
end = time.time()
print(end - start)

Example 2: python how to measure code run in time

import time
start_time = time.time()
main()
print("--- %s seconds ---" % (time.time() - start_time))

Example 3: use datetime python to get runtime

from datetime import datetime

start = datetime.now()
# code ...
print(datetime.now()-start)

Example 4: check runtime python

import timeit

code = """[4, 2, 3, 1, 5].sort()"""

execution_time = timeit.timeit(code, number=1)

print(execution_time)