Evaluate a simple Python expression -

i'm experimentig simple things in python , have different result when write same things in 2 different ways.

(ord(x) + ^ ord(y[i])) % 255 

i want expression equal example 57, since 5 ^ ord(y[5]) = 114(with i=5 , y[i]='w').i thought since 114+198=312 , 312%255=57 ord(x) should 198, if write on python console:

(ord(chr(198)) +5^ord(y[5])) % 255 188.

instead if write:

(ord(chr(73)) +5^ord(y[5])) % 255 want: 57

am missing somethings obvious here? why way of thinking wrong?

working simpler case:

>>> 1 + 1 ^ 1 3 

if want xor done first, need put parentheses around it, like

(ord(x) + (i ^ ord(y[i]))) % 255