How can I solve dependencies in my python code?

Question

A little time ago I wrote a python code (not on sololearn) and tried to run it, but when i clicked it, it told me:
"Updating dependencies
Resolving dependencies..."
And it didn't run my code, so please, I would be so happy if you gave me an answer.

Answer 1

That's why at the very beginning of every important (or as you think so) project it is better to create isolated environment. And install all dependencies there.
Also dependency solver packages are good.