[FIXED] What does "RuntimeWarning: Enable tracemalloc to get the object allocation traceback" mean? I know how to fix, looking for the meaning

Issue

When I call a coroutine without awaiting, in addition to a message warning me I have not awaited the coroutine, I also get the following warning message:

RuntimeWarning: Enable tracemalloc to get the object allocation traceback

I know how to fix this i.e. by awaiting the coroutine (and I do see a lot of questions about this warning, but all the answers are how to fix it; my goal is to understand it; please don't mark my question as duplicate if possible :) ); in particular, what I'd really like to understand is:

• What is tracemalloc? How do I enable it?
• What is the object allocation traceback?
• How is it related to coroutines? and, in particular
• Why is there a warning suggesting to enable tracemalloc when I don't await a coroutine?

My goal in asking this is understanding the details and inner-workings of asyncio better.

Solution

• What is tracemalloc? How do I enable it?

tracemalloc is a module that is used to debug memory allocation in python

you can enable it by setting PYTHONTRACEMALLOC environment variable to 1

check the docs for more info Tracemalloc docs

• What is the object allocation traceback

It's a way how python manages memory and allocates memory for it's objects

• Why is there a warning suggesting to enable tracemalloc when I don't await a coroutine?

I guess this is because memory is allocated and never used properly so we get loss of resources i.e memory leak

Answered By - Alex Ivashka