Message 151267 - Python tracker

A new lock type will NOT solve this.  It is ALWAYS okay to clear all thread/threading module locks after a fork.

They are and always have been process-local by definition so they are also by definition 100% invalid to any child process.

Anyone who has written code using them to "lock" an out-of-process resource has written code that is already broken today. Thread locks can't guard network resources.