Delay decorator for "nicing" server downloads

delay_decorator.py

import datetime
import time

def pause_2b_nice(func):
    '''Pause the execution for however long func took to run.
    Useful for not overloading servers when downloading assets.
    '''
    def inner(*args, **kwargs):
        dt_start = dt_end = datetime.datetime.now()
        ret = func(*args, **kwargs)
        dt_end = datetime.datetime.now()
        #print('DELAY:{}'.format((dt_end-dt_start).total_seconds()))
        time.sleep((dt_end-dt_start).total_seconds())
        return ret
    return inner

delay_decorator = pause_2b_nice