Doctor

Three checks against the active environment.

Check	What it verifies
Interpreter	Python runs, and which version
pip	python -m pip works here, and which version it is
PyPI	https://pypi.org is reachable (catches firewall and proxy problems)

Badge	Meaning
passed	In order
warn	Worth noting; pip still works
fail	Broken; pip operations will likely fail

A warn or fail adds a hint: what went wrong and what fixes it.

Doctor is read-only. When it suggests a command, run it in a terminal and check again.

Use it on first run, after switching environments, or when an install fails and you need to know whether the network is at fault.