def xor()

in fxa/crypto.py [0:0]

• 5 lines of code
• 4 McCabe index (conditional complexity)

def xor(data1, data2):
    if len(data1) != len(data2):
        raise ValueError("cannot xor strings of different length")
    bs = (ord(data1[i:i+1]) ^ ord(data2[i:i+1]) for i in range(len(data1)))
    return b"".join(bytes((b,)) for b in bs)