ModuleNotFoundError: No module named 'stem'

I'd installed stem with pip install stem and installed using conda install -c conda-forge stem.

If i write on terminal: pip freeze the stem shows up on his last version 1.7.1, but when i try to import to my code i got:
ModuleNotFoundError: No module named 'stem'

I've tried to install and unistall stem on version 1.6.0 and 1.7.0, but it doesnt work!