call stack is not deep enough (Cython)

Hi @Delgan

When using loguru 0.2.5 inside python script it works as expected, but when i compile this file to an executable using Cython i get this error and program terminates : call stack is not deep enough

More info of the error :

Traceback (most recent call last):
  File "test_layer.py", line 66, in init test_layer
    logger.warning('just test')
  File "/usr/local/lib/python3.5/dist-packages/loguru/_logger.py", line 1406, in log_function
    frame = get_frame(_self._depth + 1)
ValueError: call stack is not deep enough

Do you have any idea why ?

I tried increasing the execution depth limit inside the script that i import loguru by using sys.setrecursionlimit(3000) but still issue remains…

OS: raspbian stretch lite Cython-0.29.7

[Delgan]

@djsakisd As .opt() actually returns a logger object, you can add logger = logger.opt(depth=-1) at the start of your file, and then use this new logger without needing to call opt() every time.

I will investigate this issue, hopefully you will not even need this workaround in the next version. 👍

[Delgan]

Hi @djsakisd.

This is not related to the recursion limit, but to sys._getframe() which tries to access frame of the call site to extract logging information. Typically, this error indicates that loguru tried to access a frame which does not exist.

You may play with the depth option to see if some negative values fixes the problem:

logger.opt(depth=-1).info("Working?")

On my side, I will try to reproduce the error, I actually never tested Cython, so I’m not too surprised there is some incompatibilities dealing with stack frames.