A b = 1 2 3 python July 8, 2019 16 32 64 128 A b c 1 2 3 python A 1 b 2 c 3 program in python A b c 2 * 4 * 3 * 1 in python Is the following python code valid a b 1 2 3 A = 1 b = 2 python