Fail to upgrade te package because no pip

please make sure you had installed pip, or use pip command specify the version like pip3.7.5.

I can run pip3.7.5 from my linux prompt.

Hello, I have set up an empty project with the new environment just built. I can successfully run the case you sent. Is there something wrong with your environment? If you have a PIP or Python dependency problem, it is recommended that you try uninstalling and reinstalling.