我在项目解释器部分的PyCharm中成功安装了numpy，pandas。但是，由于某些未知原因，无法安装matplotlib。不知道为什么。我搜索了一段时间，但没有运气。

我正在使用Windows 10，最新版本的PyCharm，python 3.8

我尝试使用Terminal：pip install ...，也没有运气

错误消息是：

Collecting matplotlib
  Using cached https://files.pythonhosted.org/packages/12/d1/7b12cd79c791348cb0c78ce6e7d16bd72992f13c9f1e8e43d2725a6d8adf/matplotlib-3.1.1.tar.gz
Requirement already satisfied: cycler>=0.10 in d:\pythonprojects\venv\lib\site-packages (from matplotlib) (0.10.0)
Requirement already satisfied: kiwisolver>=1.0.1 in d:\pythonprojects\venv\lib\site-packages (from matplotlib) (1.1.0)
Requirement already satisfied: pyparsing!=2.0.4,!=2.1.2,!=2.1.6,>=2.0.1 in d:\pythonprojects\venv\lib\site-packages (from matplotlib) (2.4.5)
Requirement already satisfied: python-dateutil>=2.1 in d:\pythonprojects\venv\lib\site-packages (from matplotlib) (2.8.1)
Requirement already satisfied: numpy>=1.11 in d:\pythonprojects\venv\lib\site-packages (from matplotlib) (1.17.4)
Requirement already satisfied: six in d:\pythonprojects\venv\lib\site-packages (from cycler>=0.10->matplotlib) (1.13.0)
Requirement already satisfied: setuptools in d:\pythonprojects\venv\lib\site-packages (from kiwisolver>=1.0.1->matplotlib) (41.6.0)
Installing collected packages: matplotlib
    Running setup.py install for matplotlib: started
    Running setup.py install for matplotlib: finished with status 'error'

    ERROR: Command errored out with exit status 1:
     command: 'D:\PythonProjects\venv\Scripts\python.exe' -u -c 'import sys,setuptools,tokenize; sys.argv[0] = '"'"'C:\\Users\\whale\\AppData\\Local\\Temp\\pycharm-packaging\\matplotlib\\setup.py'"'"'; __file__='"'"'C:\\Users\\whale\\AppData\\Local\\Temp\\pycharm-packaging\\matplotlib\\setup.py'"'"';f=getattr(tokenize,'"'"'open'"'"',open)(__file__);code=f.read().replace('"'"'\r\n'"'"','"'"'\n'"'"');f.close();exec(compile(code,__file__,'"'"'exec'"'"'))' install --record 'C:\Users\whale\AppData\Local\Temp\pip-record-9de0kwz_\install-record.txt' --single-version-externally-managed --compile --install-headers 'D:\PythonProjects\venv\include\site\python3.8\matplotlib'
         cwd: C:\Users\whale\AppData\Local\Temp\pycharm-packaging\matplotlib\
    Complete output (507 lines):
    ================================================================================
    Edit setup.cfg to change the build options

    BUILDING MATPLOTLIB
      matplotlib: yes [3.1.1]
          python: yes [3.8.0 (tags/v3.8.0:fa919fd,Oct 14 2019,19:21:23) [MSC
                      v.1916 32 bit (Intel)]]
        platform: yes [win32]

    OPTIONAL SUBPACKAGES
     sample_data: yes [installing]
           tests: no  [skipping due to configuration]

    OPTIONAL BACKEND EXTENSIONS
             agg: yes [installing]
           tkagg: yes [installing; run-time loading from Python Tcl/Tk]
          macosx: no  [Mac OS-X only]

    OPTIONAL PACKAGE DATA
            dlls: no  [skipping due to configuration]

    running install
    running build
    running build_py
    creating build
    creating build\lib.win32-3.8
    copying lib\pylab.py -> build\lib.win32-3.8
    creating build\lib.win32-3.8\matplotlib
    copying lib\matplotlib\afm.py -> build\lib.win32-3.8\matplotlib
    copying lib\matplotlib\animation.py -> build\lib.win32-3.8\matplotlib
    ................
    ................
    ................
    warning: cmd_build_py: byte-compiling is disabled,skipping.

    UPDATING build\lib.win32-3.8\matplotlib\_version.py
    set build\lib.win32-3.8\matplotlib\_version.py to '3.1.1'
    running build_ext
    building 'matplotlib.ft2font' extension
    creating build\temp.win32-3.8
    creating build\temp.win32-3.8\Release
    creating build\temp.win32-3.8\Release\src
    C:\Program Files (x86)\microsoft Visual Studio\2019\Professional\VC\Tools\MSVC\14.23.28105\bin\HostX86\x86\cl.exe /c /nologo /Ox /W3 /GL /DNDEBUG /MD -DFREETYPE_BUILD_TYPE=system -DPY_ARRAY_UNIQUE_SYMBOL=MPL_matplotlib_ft2font_ARRAY_API -DNPY_NO_DEPRECATED_API=NPY_1_7_API_VERSION -D__STDC_FORMAT_MACROS=1 -Iextern/agg24-svn/include -ID:\PythonProjects\venv\lib\site-packages\numpy\core\include -ID:\PythonProjects\venv\include -IC:\Users\whale\AppData\Local\Programs\Python\Python38-32\include -IC:\Users\whale\AppData\Local\Programs\Python\Python38-32\include "-IC:\Program Files (x86)\microsoft Visual Studio\2019\Professional\VC\Tools\MSVC\14.23.28105\ATLMFC\include" "-IC:\Program Files (x86)\microsoft Visual Studio\2019\Professional\VC\Tools\MSVC\14.23.28105\include" "-IC:\Program Files (x86)\Windows Kits\NETFXSDK\4.8\include\um" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\ucrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\shared" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\um" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\winrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\cppwinrt" /Tcsrc/checkdep_freetype2.c /Fobuild\temp.win32-3.8\Release\src/checkdep_freetype2.obj
    checkdep_freetype2.c
    src/checkdep_freetype2.c(1): fatal error C1083: Cannot open include file: 'ft2build.h': No such file or directory
    error: command 'C:\\Program Files (x86)\\microsoft Visual Studio\\2019\\Professional\\VC\\Tools\\MSVC\\14.23.28105\\bin\\HostX86\\x86\\cl.exe' failed with exit status 2
    ----------------------------------------
ERROR: Command errored out with exit status 1: 'D:\PythonProjects\venv\Scripts\python.exe' -u -c 'import sys,'"'"'exec'"'"'))' install --record 'C:\Users\whale\AppData\Local\Temp\pip-record-9de0kwz_\install-record.txt' --single-version-externally-managed --compile --install-headers 'D:\PythonProjects\venv\include\site\python3.8\matplotlib' Check the logs for full command output.