Call build ext building '_jpype' extension error: Microsoft Visual C++ 14.0 is required. Get it with "Build Tools for Visual Studio": https://visualstudio.microsoft.com/downloads/
WARNING: You are using pip version 20.1.1; however, version 20.2.1 is available. You should consider upgrading via the 'c:userscheng.tangappdatalocalprogramspythonpython38-32python.exe -m pip install --upgrade pip' command. C:Userscheng.tang> C:Userscheng.tang>python -m pip install --upgrade pip Collecting pip Downloading pip-20.2.1-py2.py3-none-any.whl (1.5 MB) |████████████████████████████████| 1.5 MB 819 kB/s Installing collected packages: pip Attempting uninstall: pip Found existing installation: pip 20.1.1 Uninstalling pip-20.1.1: Successfully uninstalled pip-20.1.1 Successfully installed pip-20.2.1