WARNING: You are using pip version 20.1.1； however, version 20.2.3 is available. You should consider

WARNING: You are using pip version 20.1.1; however, version 20.2.3 is available.
You should consider upgrading via the ‘d:\pythonproject1\venv\scripts\python.exe -m pip install --upgrade pip’ command.
解决办法 就是把冒号中的引用直接加进去