created a nice (empty) function for the XOR

theXORitself.py

@@ -0,0 +1,18 @@
+>>> a = "a133efb38766"
+>>> b = "a0a1a2a3a5a7"
+>>> a.encode().hex()
+'613133336566623338373636'
+>>> bytes1 = bytes.fromhex( a.encode("utf-8").hex())
+>>> bytes2 =  bytes.fromhex( b.encode("utf-8").hex())
+>>> xored = bytes( b1 ^ b2 for b1,b2 in zip(bytes1,bytes2))
+>>> xored.hex()
+'000152020454030059025701'
+
+>>> for c,d  in zip(bytes1,bytes2):
+...     e.append( ( c ^ d ) )
+...
+>>> e
+bytearray(b'\x00\x01R\x02\x04T\x03\x00Y\x02W\x01')
+>>> e.hex()
+'000152020454030059025701'
+