Best Fixes
Check whether `python3` exists first and whether your shell PATH includes the interpreter you expect.
If you use pyenv, asdf, or another manager, confirm the current shell session loaded it correctly.
Why the python command is missing and how to fix it without masking the real environment issue.
Some systems ship Python as `python3` only, while others rely on version managers or virtual environments. The missing command often points to a path or environment mismatch rather than Python being absent entirely.
Check whether `python3` exists first and whether your shell PATH includes the interpreter you expect.
If you use pyenv, asdf, or another manager, confirm the current shell session loaded it correctly.
Do not add random aliases without understanding which interpreter your tooling expects.
Do not mix system Python changes with project-specific virtual environment problems.