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python repeat a function until value

Zaphiel answered on September 8, 2022 Popularity 8/10 Helpfulness 4/10

answer python repeat a function until value

python repeat a function until value

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"""
	Repeat a function for X times.
	Return (True, ret_val) if function returns ret_val in any attempts.
	Return (False, None) if function doesn't return ret_val in all attempts.
"""
def until_value(func           : Callable,
				args           : tuple,
				repeat_count   : int,
				repeat_delay_ms: Optional[int] = None,
				ret_val        : any           = True) -> tuple:
	if repeat_count < 1: raise ValueError("repeat_count < 1")

	if  repeat_delay_ms is not None \
	and repeat_delay_ms <= 0: raise ValueError("delay <= 0")

	i = 0

	while i != repeat_count:
		if  repeat_delay_ms is not None \
		and i > 0: sleep(repeat_delay_ms / 1000)

		try:
			res = func(*args)

			if res == ret_val: return True, ret_val
			else:
				i += 1
				continue
		except:
			i += 1
			continue

	return False, None

# Example usage:
# Repeat the "do_something(1)" function for maximum 5 times with 250ms delay until it returns True.
until_value(do_something, (1,), 5, 250, True)

# Repeat the "do_something2(1, 2, 3)" function for maximum 10 times with 0ms delay until it returns "hello".
until_value(do_something2, (1, 2, 3), 10, 0, "hello")

Popularity 8/10 Helpfulness 4/10 Language python

Source: Grepper

Tags: function python

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Contributed on Sep 08 2022

Zaphiel

0 Answers Avg Quality 2/10

python repeat a function until value

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