Python Forum

I am using the following coding, from a text book, to compare two methods of measuring execution time for coding but time.clock is not recognised. I am on Windows 10 using Python 3.9.2
The coding is:

import time

def do_my_sum(xs):
    sum = 0
    for v in xs:
        sum += v
    return

sz = 10000000   #10000000 elements in the list
testdata = range(sz)

t0 = time.clock()
my_result  =  do_my_sum(testdata)
t1 = time.clock()
print("my_result   = {0} {time taken = {1:4f} seconds) "
          ,format(their_result, t1 - t0))

t2 = time.clock()
their_result = sum(testdata)
t3 = time.clock()
print("their_result = {0} (time taken = {1: .4f} seconds) "
          .format(their_result, t3 - t2))

And the output is:

Output:
Traceback (most recent call last):
  File "C:\Users\qm31\Desktop\testing.py", line 12, in <module>
    t0 = time.clock()
AttributeError: module 'time' has no attribute 'clock'

Please can anyone shed light on why time.clock is not recognised? Thank you.

time.clock() is deprecated since Python 3.3

Always look at the official documentation in such cases: The Python Standard Library.
Try time.time() instead.

Thanks perfringo and ibreeden, very helpful