1. The system configuration is: windows10 + python3.6 + anaconda3 + swig4.0.2. Swig needs to add environment variables to the system environment manually.

2. According to the official readme file, execute the command [swig – C + + – Python polyiou. I], basically no problem.

3. When executing the command [Python setup. Py build]_ The error [if self. LD] appears when “ext — inplace”_ version >= ” 2.10.90″: TypeError: ‘>=’ not supported between instances of ‘NoneType’ and ‘str’】。 In the python installation path of the virtual environment, find the file of  lib  distutils  distutils.cfg, open it and find the following content: [build] compiler = mingw32, the content of the file is correct.

4. Solution: after exploration and research, we need to configure GCC, install mingw-w64 compiler, command is [CONDA install libpython m2w64 toolchain – C msys2], and then execute the command [Python setup. Py build]_ Ext — inplace], run successfully, and you will find that the_ polyiou.cp36-win_ Amd64.pyd file.