Well, this is how lengthy arguments start about pros and cons of languages, as there are many many people who will argue these are not problems or can be worked

Well, this is how lengthy arguments start about pros and cons of languages, as there are many many people who will argue these are not problems or can be worked around or are actually preferable for whatever reasons. But my biggest problems with Python are: - Lack of strong enough / useful / culture around typing - Effective limitation to single core through GIL - Lack of proper solution to closures Really the first two are the ones that make it for me, a fundamentally crippled language. And they are exactly the things you don't notice when starting out, and the things that limit you eventually.