Message 294157 - Python tracker

> (I reopen the issue since it got a long new comment.)

Andrew specifically said, "I don't propose re-opening it".

FWIW, the zen of python also says, "practicality beats purity".  For most users, most of the time, the peephole optimizer is a net win and it encourages us to write clearer code like "x & (2 ** 32 - 1)" rather than "x & 4294967295".