def binary_to_decimal(num): if num == 0: return 0 decimal = 0 t = [decimal += 2**i for i, char in enumerate(str(num)[:: -1]) if char != '0'] return int(decimal) def decimal_to_binary(num): pass print(binary_to_decimal(11100101),binary_to_decimal(10001101),binary_to_decimal(10010000)) assert binary_to_decimal(0) == 0, "0 to decimal should return 0" assert binary_to_decimal(1011) == 11, "1011 to decimal should return 11" assert binary_to_decimal(101011) == 43, "101011 to decimal should return 43" assert binary_to_decimal(101011101) == 349, "101011101 to decimal should return 349" # assert decimal_to_binary(0) == 0, "0 to binary should return 0" # assert decimal_to_binary(5) == 101, "5 to binary should return 101" # assert decimal_to_binary(10) == 1010, "10 to binary should return 1010" # assert decimal_to_binary(113) == 1110001, "113 to binary should return 1110001"