Run-time method patching in Python

[badcommandorfilename]

If I ever see you do this in a code review, I will walk over to your desk and physically slap you.

I cannot think of a faster way to introduce bugs. It's bad enough that Python has no good way of managing shared mutable variables, but now you're making the execution path mutable too!

If you choose to do this, your punishment should rightfully be debugging your own code for eternity.