小编Maj*_*nik的帖子

为了升级和清理，我重置了我的电脑并安装了Windows 10。自然，我安装了Python，因为我经常使用它。但是当我尝试使用命令“pip install matplotlib”安装 MatPlotLib 时，它显示了一条红色的错误消息：

    C:\Users\majkl\AppData\Local\Programs\Python\Python39\Scripts>pip install matplotlib
Collecting matplotlib
  Using cached matplotlib-3.3.2.tar.gz (37.9 MB)
    ERROR: Command errored out with exit status 1:
     command: 'c:\users\majkl\appdata\local\programs\python\python39\python.exe' -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\majkl\\AppData\\Local\\Temp\\pip-install-ex__f7yd\\matplotlib\\setup.py'"'"'; __file__='"'"'C:\\Users\\majkl\\AppData\\Local\\Temp\\pip-install-ex__f7yd\\matplotlib\\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' egg_info --egg-base 'C:\Users\majkl\AppData\Local\Temp\pip-pip-egg-info-my5odhue'
         cwd: C:\Users\majkl\AppData\Local\Temp\pip-install-ex__f7yd\matplotlib\
    Complete output (248 lines):
        ERROR: Command errored out with exit status 1:
         command: 'c:\users\majkl\appdata\local\programs\python\python39\python.exe' 'c:\users\majkl\appdata\local\programs\python\python39\lib\site-packages\pip\_vendor\pep517\_in_process.py' prepare_metadata_for_build_wheel 'C:\Users\majkl\AppData\Local\Temp\tmp1jo_3g_p'
             cwd: C:\Users\majkl\AppData\Local\Temp\pip-wheel-5qwibsn2\numpy
        Complete output (200 lines):
        Running from numpy source directory.
        setup.py:470: UserWarning: Unrecognized setuptools command, proceeding with …