utils.py

from timeit import default_timer as timer

def mac_addr(bytestring):
    return ':'.join('{:02x}'.format(piece) for piece in bytestring).upper()



def timefunc(func):
    def inner(*args, **kwargs):
        start = timer()
        results = func(*args, **kwargs)
        end = timer()
        message = '{} took {} seconds'.format(func.__name__, end - start)
        print(message)
        return results
    return inner