Small script that generates all possible 4 number pin combinations.

pins.py

"""pins.py

Small script that generates all possible 4 number
pin combinations. Inspired by @ThePracticalDev's tweet challenge:
https://twitter.com/thepracticaldev/status/1000191076106465281?s=21

Challenge Alert!!

Write a script that produces all possible 4-digit numbers (0000...9999), 
then put them into a random order and save the output into a text file.
"""
def gen_pins():
	"""Generates the pins"""
	pins = {str(n).zfill(4) for n in range(0, 10000)}
	return pins


def save_pins(pins, filename):
	"""Saves the pins to a text file"""
	with open(filename, 'w') as file:
		for pin in pins:
			file.write(f'{pin}\n')


def main():
	"""Runs the script"""
	filename = 'leaked_pins.txt'
	pins = gen_pins()
	save_pins(pins, filename)
	print(f'Generated: {filename}')


if __name__ == '__main__':
	main()