AttributeError: module 'time' has no attribute 'clock' - Python 3.8

[Maug92]

Failed with:

File ".\main.py", line 422, in process_queue
    start = time.clock()
AttributeError: module 'time' has no attribute 'clock'

Fix:

Replace all calls to time.clock() with time.perf_counter(). time.clock() has been removed from the time module in Python 3.8.