**Python 2 and 3 differences** 

A [recent challenge][1] pushed me to search for differences in two major versions of Python. More precisely, code that returns different results in different versions. This might be helpful in other polyglot challenges.

1) Strings and bytes comparison

 - Python 2: `'' == b''` 
 - Python 3: `'' != b''`

2) Rounding (Luis Mendo [answer][2])

 - Python 2: `round(1*0.5) = 1.0`
 - Python 3: `round(1*0.5) = 0` 

3) Division (Jonathan Allan [answer][3])

 - Python 2: `10/11 = 0`
 - Python 3: `10/11 = 0.9090909090909091`

4) Suggestions?

 [1]: https://codegolf.stackexchange.com/questions/137040/fake-divisor-sum-polyglots
 [2]: https://codegolf.stackexchange.com/a/137062/66855
 [3]: https://codegolf.stackexchange.com/a/137119/66855