Function timer

timerWrapper.py

import importlib

# @timer
def timer(fn):
    time = importlib.import_module('time')  # dynamic import

    def wrapper(*args, **kw):
        print('[{}]: Task starting...'.format(fn.__name__))
        START = time.time()
        res = fn(*args, **kw)
        END = time.time()
        print('[{}]: Task total used {}s'.format(
            fn.__name__, round(END - START, 3)))
        return res
    return wrapper