def delay_exponential(base, growth_factor, attempts):
    """Calculate time to sleep based on exponential function.
    The format is::

        base * growth_factor ^ (attempts - 1)

    If ``base`` is set to 'rand' then a random number between
    0 and 1 will be used as the base.
    Base must be greater than 0, otherwise a ValueError will be
    raised.
    """
    if base == 'rand':
        base = random.random()
    elif base <= 0:
        raise ValueError("The 'base' param must be greater than 0, "
                         "got: {}".format(base))
    time_to_sleep = base * (growth_factor ** (attempts - 1))
    return time_to_sleep
def delay_exponential(base, growth_factor, attempts):
    """Calculate time to sleep based on exponential function.
    The format is::

        base * growth_factor ^ (attempts - 1)

    If ``base`` is set to 'rand' then a random number between
    0 and 1 will be used as the base.
    Base must be greater than 0, otherwise a ValueError will be
    raised.
    """
    if base == 'rand':
        base = random.random()
    elif base <= 0:
        raise ValueError("The 'base' param must be greater than 0, "
                         "got: {}".format(base))
    time_to_sleep = base * (growth_factor ** (attempts - 1))
    return time_to_sleep
def delay_exponential ( base , growth_factor , attempts ) : if base == 'rand' : base = random . random ( ) elif base <= 0 : raise ValueError ( "The 'base' param must be greater than 0, " "got: {}" . format ( base ) ) time_to_sleep = base * ( growth_factor ** ( attempts - 1 ) ) return time_to_sleep
Calculate time to sleep based on exponential function.
    The format is::

        base * growth_factor ^ (attempts - 1)

    If ``base`` is set to 'rand' then a random number between
    0 and 1 will be used as the base.
    Base must be greater than 0, otherwise a ValueError will be
    raised.
Calculate time to sleep based on exponential function . The format is ::