[FIXED] Python 2 vs 3: consistent results with getting a byte from byte string

Issue

Is there any simple way to get consistent results in both Python 2 and Python 3 for operatioIn like "give me N-th byte in byte string"? Getting either byte-as-integer or byte-as-character will do for me, as long as that will be consistent.

I.e. given

s = b"123"

Naïve approach yields:

s[1] # => Python 2: '2', <type 'str'>
s[1] # => Python 3: 50, <class 'int'>

Wrapping that in ord(...) yields an error in Python 3:

ord(s[1]) # => Python 2: 50, <type 'int'> 
ord(s[1]) # => Python 3: TypeError: ord() expected string of length 1, but int found

I can think of a fairly complicated compat solution:

ord(s[1]) if (type(s[1]) == type("str")) else s[1] # 50 in both Python 2 and 3

... but may be there's an easier way which I just don't notice?

Solution

A length-1 slice will be also be a byte-sequence in either 2.x or 3.x:

s = b'123'
s[1:2] # 3.x: b'2'; 2.x: '2', which is the same thing but the repr() rules are different.

Answered By - Karl Knechtel