CONFIG_A = 1     # bin: 0b00000001
CONFIG_B = 2     # bin: 0b00000010
CONFIG_C = 4     # bin: 0b00000100
CONFIG_D = 8     # bin: 0b00001000
CONFIG_E = 16    # bin: 0b00010000
CONFIG_F = 32    # bin: 0b00100000
CONFIG_G = 64    # bin: 0b01000000
CONFIG_H = 128   # bin: 0b10000000

config = CONFIG_A | CONFIG_C  # bin: 0b00000101

print(bin(config))