TheAlgorithms-Python

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alphabets = [chr(i) for i in range(32, 126)]
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gear_one = list(range(len(alphabets)))
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gear_two = list(range(len(alphabets)))
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gear_three = list(range(len(alphabets)))
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reflector = list(reversed(range(len(alphabets))))
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code = []
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gear_one_pos = gear_two_pos = gear_three_pos = 0
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def rotator():
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    global gear_one_pos
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    global gear_two_pos
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    global gear_three_pos
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    i = gear_one[0]
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    gear_one.append(i)
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    del gear_one[0]
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    gear_one_pos += 1
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    if gear_one_pos % int(len(alphabets)) == 0:
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        i = gear_two[0]
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        gear_two.append(i)
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        del gear_two[0]
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        gear_two_pos += 1
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        if gear_two_pos % int(len(alphabets)) == 0:
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            i = gear_three[0]
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            gear_three.append(i)
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            del gear_three[0]
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            gear_three_pos += 1
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def engine(input_character):
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    target = alphabets.index(input_character)
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    target = gear_one[target]
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    target = gear_two[target]
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    target = gear_three[target]
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    target = reflector[target]
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    target = gear_three.index(target)
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    target = gear_two.index(target)
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    target = gear_one.index(target)
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    code.append(alphabets[target])
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    rotator()
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if __name__ == "__main__":
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    decode = list(input("Type your message:\n"))
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    while True:
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        try:
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            token = int(input("Please set token:(must be only digits)\n"))
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            break
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        except Exception as error:
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            print(error)
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    for _ in range(token):
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        rotator()
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    for j in decode:
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        engine(j)
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    print("\n" + "".join(code))
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    print(
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        f"\nYour Token is {token} please write it down.\nIf you want to decode "
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        "this message again you should input same digits as token!"
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    )
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