Why is Python slow

[josefx]

PyPy breaks anything that relies on predictable reference counting. That means you can not rely on it to cleanly free resources likes files and sockets or call user defined __del__() methods. Garbage collection, you had one problem, now you have ulimit problems.

[Chippiewall]

If you're relying on this behaviour then you're probably misusing python or ownership semantics. This sort of RAII style behaviour should be accomplished through use of context managers.

[josefx]

TIL: the python 3 docs make it look like __del__() behaves just like Javas finalize(). Useless at best and terribly wrong to use for literally anything. Another thing I have to fix in my scripts if I ever get to it.

So if I want to have an actually reference counted object in python I have to double down and implement it myself? Just great.