尝试像pip install pylzma这样的东西会返回:Installing collected packages: pylzmaYou are using pip version 8.0.2, however version 8.1.1 is available.但是pip list没有显示要安装的pylzma。我试过pip install --install-option="--prefix
close_fds is not supported on Windows platforms if you redirect stdin/stdout/stderr
我也尝试过pip install pylzma,但这需要用于Python building 'pylzma' extension error: Microsoft Visual C++ 9.0 is required.