解决WARNING: You are using pip version 20.2.4; however, version 20.3.1 is available. You should consid
version20.3.1isavailable.Youshouldconsiderupgradingviathe‘f:\demopy\python.exe-mpipinstall--upgradepip’command.执行:python-mpipinstall-U--force-reinstallpip