"""
A NOT Gate is a logic gate in boolean algebra which results to 0 (False) if the
input is high, and 1 (True) if the input is low.
Following is the truth table of a XOR Gate:
 ------------------------------
 | Input | Output |
 ------------------------------
 | 0 | 1 |
 | 1 | 0 |
 ------------------------------
Refer - https://www.geeksforgeeks.org/logic-gates-in-python/
"""


def not_gate(input_1: int) -> int:
 """
 Calculate NOT of the input values
 >>> not_gate(0)
 1
 >>> not_gate(1)
 0
 """

 return 1 if input_1 == 0 else 0


if __name__ == "__main__":
 import doctest

 doctest.testmod()