无法安装撕裂器错误：命令错误退出，退出状态为 1

Question

trying to install ripser on python 3.9.1 windiws version all dependencies have been pre install including build tools in microsoft visual. but when i run it i keep getting the following error.

ERROR: Command errored out with exit status 1:
   command: 'c:\users\paula\appdata\local\programs\python\python39\python.exe' 'c:\users\paula\appdata\local\programs\python\python39\lib\site-packages\pip\_vendor\pep517\_in_process.py' build_wheel 'C:\Users\paula\AppData\Local\Temp\tmp45xjgsf6'
       cwd: C:\Users\paula\AppData\Local\Temp\pip-install-k98qcrft\ripser_d73af33c4d364b9f9b927544c1bfdf2d
  Complete output (21 lines):
  running bdist_wheel
  running build
  running build_py
  creating build
  creating build\lib.win-amd64-3.9
  creating build\lib.win-amd64-3.9\ripser
  copying ripser\ripser.py -> build\lib.win-amd64-3.9\ripser
  copying ripser\_version.py -> build\lib.win-amd64-3.9\ripser
  copying ripser\__init__.py -> build\lib.win-amd64-3.9\ripser
  running build_ext
  building 'pyRipser' extension
  creating build\temp.win-amd64-3.9
  creating build\temp.win-amd64-3.9\Release
  creating build\temp.win-amd64-3.9\Release\ripser
  C:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools\VC\Tools\MSVC\14.28.29333\bin\HostX86\x64\cl.exe /c /nologo /Ox /W3 /GL /DNDEBUG /MD -DUSE_COEFFICIENTS=1 -DNDEBUG=1 -DASSEMBLE_REDUCTION_MATRIX=1 -I.\ripser -Ic:\users\paula\appdata\local\programs\python\python39\include -Ic:\users\paula\appdata\local\programs\python\python39\include -IC:\Users\paula\AppData\Local\Temp\pip-build-env-8p1qzbil\overlay\Lib\site-packages\numpy\core\include -IC:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools\VC\Tools\MSVC\14.28.29333\include /EHsc /Tpripser/pyRipser.cpp /Fobuild\temp.win-amd64-3.9\Release\ripser/pyRipser.obj -Ofast -D_hypot=hypot /std:c++14
  cl : Command line warning D9025 : overriding '/Os' with '/Ot'
  cl : Command line warning D9002 : ignoring unknown option '-Of'
  cl : Command line warning D9002 : ignoring unknown option '-Oa'
  pyRipser.cpp
  c:\users\paula\appdata\local\programs\python\python39\include\pyconfig.h(59): fatal error C1083: Cannot open include file: 'io.h': No such file or directory
  error: command 'C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\BuildTools\\VC\\Tools\\MSVC\\14.28.29333\\bin\\HostX86\\x64\\cl.exe' failed with exit code 2
  ----------------------------------------
  ERROR: Failed building wheel for ripser
Failed to build ripser
ERROR: Could not build wheels for ripser which use PEP 517 and cannot be installed directly.

I've already tried pip install -- pre -U ripser which worked for sklearn but it wasn't working for this any advice would be appreciated.

Answer 1

I have since installed ripser by deleting python and reinstalling as version 3.8.7. A lot of packages are not supported on python 3.9.1 and so installing things can be more difficult. On the older version of python i was able to reinstall all my packages with no issues.