So, removing the GIL will slow down Python, at least initially. Speed gains from multi-threading won't come if you don't change your code, unless you happen to

So, removing the GIL will slow down Python, at least initially. Speed gains from multi-threading won't come if you don't change your code, unless you happen to use a library that becomes multi-threaded (in which case you have to start worrying about callbacks). > It seems like it could be a great outcome for developers. For the ones that use certain libraries, not for those that have to build them.