为什么在 运行 "pip install -r requirements.txt" 时出现错误 "Could not find a version that satisfies the requirement scipy==1.5.3"?

Why do I get error "Could not find a version that satisfies the requirement scipy==1.5.3" when running "pip install -r requirements.txt"?

我正在尝试为现有的 Django 项目安装所有需要的模块。当我 运行 pip install -r requirements.txt 我得到以下错误:

ERROR: Could not find a version that satisfies the requirement scipy==1.5.3
ERROR: No matching distribution found for scipy==1.5.3

我是 运行宁 Python 3.9.1。为什么我会收到这些错误?

这就是我可以从输出中包含的内容:

Collecting scipy==1.5.3
  Using cached scipy-1.5.3.tar.gz (25.2 MB)
  Installing build dependencies ... error
  ERROR: Command errored out with exit status 1:
   command: 'c:\users\...\documents\django\...-gui\scripts\python.exe' 'c:\users\...\documents\django\...-gui\lib\site-packages\pip' install --ignore-installed --no-user --prefix 'C:\Users\...\AppData\Local\Temp\pip-build-env-33savj39\overlay' --no-warn-script-location --no-binary :none: --only-binary :none: -i https://pypi.org/simple -- wheel setuptools 'Cython>=0.29.18' 'numpy==1.14.5; python_version=='"'"'3.6'"'"' and platform_system!='"'"'AIX'"'"'' 'numpy==1.14.5; python_version=='"'"'3.7'"'"' and platform_system!='"'"'AIX'"'"'' 'numpy==1.17.3; python_version>='"'"'3.8'"'"' and platform_system!='"'"'AIX'"'"'' 'numpy==1.16.0; python_version=='"'"'3.6'"'"' and platform_system=='"'"'AIX'"'"'' 'numpy==1.16.0; python_version=='"'"'3.7'"'"' and platform_system=='"'"'AIX'"'"'' 'numpy==1.17.3; python_version>='"'"'3.8'"'"' and platform_system=='"'"'AIX'"'"'' 'pybind11>=2.4.3'
       cwd: None
  Complete output (544 lines):
  Ignoring numpy: markers 'python_version == "3.6" and platform_system != "AIX"' don't match your environment
  Ignoring numpy: markers 'python_version == "3.7" and platform_system != "AIX"' don't match your environment
  Ignoring numpy: markers 'python_version == "3.6" and platform_system == "AIX"' don't match your environment
  Ignoring numpy: markers 'python_version == "3.7" and platform_system == "AIX"' don't match your environment
  Ignoring numpy: markers 'python_version >= "3.8" and platform_system == "AIX"' don't match your environment
  Collecting wheel
    Using cached wheel-0.36.2-py2.py3-none-any.whl (35 kB)
  Collecting setuptools
    Using cached setuptools-52.0.0-py3-none-any.whl (784 kB)
  Collecting Cython>=0.29.18
    Using cached Cython-0.29.21-py2.py3-none-any.whl (974 kB)
  Collecting numpy==1.17.3
    Using cached numpy-1.17.3.zip (6.4 MB)
  Collecting pybind11>=2.4.3
    Using cached pybind11-2.6.1-py2.py3-none-any.whl (188 kB)
  Building wheels for collected packages: numpy
    Building wheel for numpy (setup.py): started
    Building wheel for numpy (setup.py): finished with status 'error'
    ERROR: Command errored out with exit status 1:
     command: 'c:\users\...\documents\django\...-gui\scripts\python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\Users\...\AppData\Local\Temp\pip-install-y2da6o7k\numpy_cd5da68dc4b348859cbb9a5179b5032c\setup.py'"'"'; __file__='"'"'C:\Users\...\AppData\Local\Temp\pip-install-y2da6o7k\numpy_cd5da68dc4b348859cbb9a5179b5032c\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' bdist_wheel -d 'C:\Users\...\AppData\Local\Temp\pip-wheel-aboz9fqi'
         cwd: C:\Users\...\AppData\Local\Temp\pip-install-y2da6o7k\numpy_cd5da68dc4b348859cbb9a5179b5032c\
    Complete output (244 lines):
    Running from numpy source directory.
    blas_opt_info:
    blas_mkl_info:
    No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
    customize MSVCCompiler
      libraries mkl_rt not found in ['c:\users\...\documents\django\...-gui\lib', 'C:\']
      NOT AVAILABLE

    blis_info:
    No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
    customize MSVCCompiler
      libraries blis not found in ['c:\users\...\documents\django\...-gui\lib', 'C:\']
      NOT AVAILABLE

    openblas_info:
    No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
    customize MSVCCompiler
    No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
    customize MSVCCompiler
      libraries openblas not found in ['c:\users\...\documents\django\...-gui\lib', 'C:\']
    get_default_fcompiler: matching types: '['gnu', 'intelv', 'absoft', 'compaqv', 'intelev', 'gnu95', 'g95', 'intelvem', 'intelem', 'flang']'

    'svnversion' is not recognized as an internal or external command,
    operable program or batch file.
    non-existing path in 'numpy\distutils': 'site.cfg'
    lapack_opt_info:
    lapack_mkl_info:
    No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
    customize MSVCCompiler
      libraries mkl_rt not found in ['c:\users\...\documents\django\...-gui\lib', 'C:\']
      NOT AVAILABLE

    openblas_lapack_info:
    No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
    customize MSVCCompiler
    No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
    customize MSVCCompiler
      libraries openblas not found in ['c:\users\...\documents\django\...-gui\lib', 'C:\']
      NOT AVAILABLE

    openblas_clapack_info:
    No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
    customize MSVCCompiler
    No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
    customize MSVCCompiler
      libraries openblas,lapack not found in ['c:\users\...\documents\django\...-gui\lib', 'C:\']
      NOT AVAILABLE

    flame_info:
    No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
    customize MSVCCompiler
      libraries flame not found in ['c:\users\...\documents\django\...-gui\lib', 'C:\']
      NOT AVAILABLE

    atlas_3_10_threads_info:
    Setting PTATLAS=ATLAS
    No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
    customize MSVCCompiler
      libraries lapack_atlas not found in c:\users\...\documents\django\...-gui\lib
    No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
    customize MSVCCompiler
      libraries tatlas,tatlas not found in c:\users\...\documents\django\...-gui\lib
    No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
    customize MSVCCompiler
      libraries lapack_atlas not found in C:\
    No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
    customize MSVCCompiler
      libraries tatlas,tatlas not found in C:\
    <class 'numpy.distutils.system_info.atlas_3_10_threads_info'>
      NOT AVAILABLE

    atlas_3_10_info:
    No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
    customize MSVCCompiler
      libraries lapack_atlas not found in c:\users\...\documents\django\...-gui\lib
    No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
    customize MSVCCompiler
      libraries satlas,satlas not found in c:\users\...\documents\django\...-gui\lib
    No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
    customize MSVCCompiler
      libraries lapack_atlas not found in C:\
    No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
    customize MSVCCompiler
      libraries satlas,satlas not found in C:\
    <class 'numpy.distutils.system_info.atlas_3_10_info'>
      NOT AVAILABLE

    atlas_threads_info:
    Setting PTATLAS=ATLAS
    No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
    customize MSVCCompiler
      libraries lapack_atlas not found in c:\users\...\documents\django\...-gui\lib
    No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
    customize MSVCCompiler
      libraries ptf77blas,ptcblas,atlas not found in c:\users\...\documents\django\...-gui\lib
    No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
    customize MSVCCompiler
      libraries lapack_atlas not found in C:\
    No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
    customize MSVCCompiler
      libraries ptf77blas,ptcblas,atlas not found in C:\
    <class 'numpy.distutils.system_info.atlas_threads_info'>
      NOT AVAILABLE

    atlas_info:
    No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
    customize MSVCCompiler
      libraries lapack_atlas not found in c:\users\...\documents\django\...-gui\lib
    No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
    customize MSVCCompiler
      libraries f77blas,cblas,atlas not found in c:\users\...\documents\django\...-gui\lib
    No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
    customize MSVCCompiler
      libraries lapack_atlas not found in C:\
    No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
    customize MSVCCompiler
      libraries f77blas,cblas,atlas not found in C:\
    <class 'numpy.distutils.system_info.atlas_info'>
      NOT AVAILABLE

    lapack_info:
    No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
    customize MSVCCompiler
      libraries lapack not found in ['c:\users\...\documents\django\...-gui\lib', 'C:\']
      NOT AVAILABLE

    C:\Users\...\AppData\Local\Temp\pip-install-y2da6o7k\numpy_cd5da68dc4b348859cbb9a5179b5032c\numpy\distutils\system_info.py:1712: UserWarning:
        Lapack (http://www.netlib.org/lapack/) libraries not found.
        Directories to search for the libraries can be specified in the
        numpy/distutils/site.cfg file (section [lapack]) or by setting
        the LAPACK environment variable.
      if getattr(self, '_calc_info_{}'.format(lapack))():
    lapack_src_info:
      NOT AVAILABLE

    C:\Users\...\AppData\Local\Temp\pip-install-y2da6o7k\numpy_cd5da68dc4b348859cbb9a5179b5032c\numpy\distutils\system_info.py:1712: UserWarning:
        Lapack (http://www.netlib.org/lapack/) sources not found.
        Directories to search for the sources can be specified in the
        numpy/distutils/site.cfg file (section [lapack_src]) or by setting
        the LAPACK_SRC environment variable.
      if getattr(self, '_calc_info_{}'.format(lapack))():
      NOT AVAILABLE

    c:\users\...\appdata\local\programs\python\python39\lib\distutils\dist.py:274: UserWarning: Unknown distribution option: 'define_macros'
      warnings.warn(msg)
    running bdist_wheel
    running build
    running config_cc
    unifing config_cc, config, build_clib, build_ext, build commands --compiler options
    running config_fc
    unifing config_fc, config, build_clib, build_ext, build commands --fcompiler options
    running build_src
    build_src
    building py_modules sources
    creating build
    creating build\src.win-amd64-3.9
    creating build\src.win-amd64-3.9\numpy
    creating build\src.win-amd64-3.9\numpy\distutils
    building library "npymath" sources
    No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
    error: Microsoft Visual C++ 14.0 or greater is required. Get it with "Microsoft C++ Build Tools": https://visualstudio.microsoft.com/visual-cpp-build-tools/
    ----------------------------------------
    ERROR: Failed building wheel for numpy
    Running setup.py clean for numpy
    ERROR: Command errored out with exit status 1:
     command: 'c:\users\...\documents\django\...-gui\scripts\python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\Users\...\AppData\Local\Temp\pip-install-y2da6o7k\numpy_cd5da68dc4b348859cbb9a5179b5032c\setup.py'"'"'; __file__='"'"'C:\Users\...\AppData\Local\Temp\pip-install-y2da6o7k\numpy_cd5da68dc4b348859cbb9a5179b5032c\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' clean --all
         cwd: C:\Users\...\AppData\Local\Temp\pip-install-y2da6o7k\numpy_cd5da68dc4b348859cbb9a5179b5032c
    Complete output (10 lines):
    Running from numpy source directory.

    `setup.py clean` is not supported, use one of the following instead:

      - `git clean -xdf` (cleans all files)
      - `git clean -Xdf` (cleans all versioned files, doesn't touch
                          files that aren't checked into the git repo)

    Add `--force` to your command to use it anyway if you must (unsupported).

    ----------------------------------------
    ERROR: Failed cleaning build dir for numpy
  Failed to build numpy
  Installing collected packages: wheel, setuptools, pybind11, numpy, Cython
      Running setup.py install for numpy: started
      Running setup.py install for numpy: finished with status 'error'
      ERROR: Command errored out with exit status 1:
       command: 'c:\users\...\documents\django\...-gui\scripts\python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\Users\...\AppData\Local\Temp\pip-install-y2da6o7k\numpy_cd5da68dc4b348859cbb9a5179b5032c\setup.py'"'"'; __file__='"'"'C:\Users\...\AppData\Local\Temp\pip-install-y2da6o7k\numpy_cd5da68dc4b348859cbb9a5179b5032c\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\...\AppData\Local\Temp\pip-record-coizi8ln\install-record.txt' --single-version-externally-managed --prefix 'C:\Users\...\AppData\Local\Temp\pip-build-env-33savj39\overlay' --compile --install-headers 'C:\Users\...\AppData\Local\Temp\pip-build-env-33savj39\overlay\include\site\python3.9\numpy'
           cwd: C:\Users\...\AppData\Local\Temp\pip-install-y2da6o7k\numpy_cd5da68dc4b348859cbb9a5179b5032c\
      Complete output (249 lines):
      Running from numpy source directory.

      Note: if you need reliable uninstall behavior, then install
      with pip instead of using `setup.py install`:

        - `pip install .`       (from a git repo or downloaded source
                                 release)
        - `pip install numpy`   (last NumPy release on PyPi)


      blas_opt_info:
      blas_mkl_info:
      No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
      customize MSVCCompiler
        libraries mkl_rt not found in ['c:\users\...\documents\django\...-gui\lib', 'C:\']
        NOT AVAILABLE

      blis_info:
      No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
      customize MSVCCompiler
        libraries blis not found in ['c:\users\...\documents\django\...-gui\lib', 'C:\']
        NOT AVAILABLE

      openblas_info:
      No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
      customize MSVCCompiler
      No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
      customize MSVCCompiler
        libraries openblas not found in ['c:\users\...\documents\django\...-gui\lib', 'C:\']
      get_default_fcompiler: matching types: '['gnu', 'intelv', 'absoft', 'compaqv', 'intelev', 'gnu95', 'g95', 'intelvem', 'intelem', 'flang']'
      customize GnuFCompiler
      Could not locate executable g77
      Could not locate executable f77
      customize IntelVisualFCompiler
      Could not locate executable ifort
      Could not locate executable ifl
      customize AbsoftFCompiler
      Could not locate executable f90
      customize CompaqVisualFCompiler
      Could not locate executable DF
      customize IntelItaniumVisualFCompiler
      Could not locate executable efl
      customize Gnu95FCompiler
      Could not locate executable gfortran
      Could not locate executable f95
      customize G95FCompiler
      Could not locate executable g95
      customize IntelEM64VisualFCompiler
      customize IntelEM64TFCompiler
      Could not locate executable efort
      Could not locate executable efc
      customize PGroupFlangCompiler
      Could not locate executable flang
      don't know how to compile Fortran code on platform 'nt'
        NOT AVAILABLE

      atlas_3_10_blas_threads_info:
      Setting PTATLAS=ATLAS
      No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
      customize MSVCCompiler
        libraries tatlas not found in ['c:\users\...\documents\django\...-gui\lib', 'C:\']
        NOT AVAILABLE

      atlas_3_10_blas_info:
      No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
      customize MSVCCompiler
        libraries satlas not found in ['c:\users\...\documents\django\...-gui\lib', 'C:\']
        NOT AVAILABLE

      atlas_blas_threads_info:
      Setting PTATLAS=ATLAS
      No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
      customize MSVCCompiler
        libraries ptf77blas,ptcblas,atlas not found in ['c:\users\...\documents\django\...-gui\lib', 'C:\']
        NOT AVAILABLE

      atlas_blas_info:
      No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
      customize MSVCCompiler
        libraries f77blas,cblas,atlas not found in ['c:\users\...\documents\django\...-gui\lib', 'C:\']
        NOT AVAILABLE

      accelerate_info:
        NOT AVAILABLE

      C:\Users\...\AppData\Local\Temp\pip-install-y2da6o7k\numpy_cd5da68dc4b348859cbb9a5179b5032c\numpy\distutils\system_info.py:690: UserWarning:
          Optimized (vendor) Blas libraries are not found.
          Falls back to netlib Blas library which has worse performance.
          A better performance should be easily gained by switching
          Blas library.
        self.calc_info()
      blas_info:
      No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
      customize MSVCCompiler
        libraries blas not found in ['c:\users\...\documents\django\...-gui\lib', 'C:\']
        NOT AVAILABLE

      C:\Users\...\AppData\Local\Temp\pip-install-y2da6o7k\numpy_cd5da68dc4b348859cbb9a5179b5032c\numpy\distutils\system_info.py:690: UserWarning:
          Blas (http://www.netlib.org/blas/) libraries not found.
          Directories to search for the libraries can be specified in the
          numpy/distutils/site.cfg file (section [blas]) or by setting
          the BLAS environment variable.
        self.calc_info()
      blas_src_info:
        NOT AVAILABLE

      C:\Users\...\AppData\Local\Temp\pip-install-y2da6o7k\numpy_cd5da68dc4b348859cbb9a5179b5032c\numpy\distutils\system_info.py:690: UserWarning:
          Blas (http://www.netlib.org/blas/) sources not found.
          Directories to search for the sources can be specified in the
          numpy/distutils/site.cfg file (section [blas_src]) or by setting
          the BLAS_SRC environment variable.
        self.calc_info()
        NOT AVAILABLE

      'svnversion' is not recognized as an internal or external command,
      operable program or batch file.
      non-existing path in 'numpy\distutils': 'site.cfg'
      lapack_opt_info:
      lapack_mkl_info:
      No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
      customize MSVCCompiler
        libraries mkl_rt not found in ['c:\users\...\documents\django\...-gui\lib', 'C:\']
        NOT AVAILABLE

      openblas_lapack_info:
      No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
      customize MSVCCompiler
      No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
      customize MSVCCompiler
        libraries openblas not found in ['c:\users\...\documents\django\...-gui\lib', 'C:\']
        NOT AVAILABLE

      openblas_clapack_info:
      No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
      customize MSVCCompiler
      No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
      customize MSVCCompiler
        libraries openblas,lapack not found in ['c:\users\...\documents\django\...-gui\lib', 'C:\']
        NOT AVAILABLE

      flame_info:
      No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
      customize MSVCCompiler
        libraries flame not found in ['c:\users\...\documents\django\...-gui\lib', 'C:\']
        NOT AVAILABLE

      atlas_3_10_threads_info:
      Setting PTATLAS=ATLAS
      No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
      customize MSVCCompiler
        libraries lapack_atlas not found in c:\users\...\documents\django\...-gui\lib
      No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
      customize MSVCCompiler
        libraries tatlas,tatlas not found in c:\users\...\documents\django\...-gui\lib
      No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
      customize MSVCCompiler
        libraries lapack_atlas not found in C:\
      No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
      customize MSVCCompiler
        libraries tatlas,tatlas not found in C:\
      <class 'numpy.distutils.system_info.atlas_3_10_threads_info'>
        NOT AVAILABLE

      atlas_3_10_info:
      No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
      customize MSVCCompiler
        libraries lapack_atlas not found in c:\users\...\documents\django\...-gui\lib
      No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
      customize MSVCCompiler
        libraries satlas,satlas not found in c:\users\...\documents\django\...-gui\lib
      No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
      customize MSVCCompiler
        libraries lapack_atlas not found in C:\
      No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
      customize MSVCCompiler
        libraries satlas,satlas not found in C:\
      <class 'numpy.distutils.system_info.atlas_3_10_info'>
        NOT AVAILABLE

      atlas_threads_info:
      Setting PTATLAS=ATLAS
      No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
      customize MSVCCompiler
        libraries lapack_atlas not found in c:\users\...\documents\django\...-gui\lib
      No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
      customize MSVCCompiler
        libraries ptf77blas,ptcblas,atlas not found in c:\users\...\documents\django\...-gui\lib
      No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
      customize MSVCCompiler
        libraries lapack_atlas not found in C:\
      No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
      customize MSVCCompiler
        libraries ptf77blas,ptcblas,atlas not found in C:\
      <class 'numpy.distutils.system_info.atlas_threads_info'>
        NOT AVAILABLE

      atlas_info:
      No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
      customize MSVCCompiler
        libraries lapack_atlas not found in c:\users\...\documents\django\...-gui\lib
      No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
      customize MSVCCompiler
        libraries f77blas,cblas,atlas not found in c:\users\...\documents\django\...-gui\lib
      No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
      customize MSVCCompiler
        libraries lapack_atlas not found in C:\
      No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
      customize MSVCCompiler
        libraries f77blas,cblas,atlas not found in C:\
      <class 'numpy.distutils.system_info.atlas_info'>
        NOT AVAILABLE

      lapack_info:
      No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
      customize MSVCCompiler
        libraries lapack not found in ['c:\users\...\documents\django\...-gui\lib', 'C:\']
        NOT AVAILABLE

      C:\Users\...\AppData\Local\Temp\pip-install-y2da6o7k\numpy_cd5da68dc4b348859cbb9a5179b5032c\numpy\distutils\system_info.py:1712: UserWarning:
          Lapack (http://www.netlib.org/lapack/) libraries not found.
          Directories to search for the libraries can be specified in the
          numpy/distutils/site.cfg file (section [lapack]) or by setting
          the LAPACK environment variable.
        if getattr(self, '_calc_info_{}'.format(lapack))():
      lapack_src_info:
        NOT AVAILABLE

      C:\Users\...\AppData\Local\Temp\pip-install-y2da6o7k\numpy_cd5da68dc4b348859cbb9a5179b5032c\numpy\distutils\system_info.py:1712: UserWarning:
          Lapack (http://www.netlib.org/lapack/) sources not found.
          Directories to search for the sources can be specified in the
          numpy/distutils/site.cfg file (section [lapack_src]) or by setting
          the LAPACK_SRC environment variable.
        if getattr(self, '_calc_info_{}'.format(lapack))():
        NOT AVAILABLE

      c:\users\...\appdata\local\programs\python\python39\lib\distutils\dist.py:274: UserWarning: Unknown distribution option: 'define_macros'
        warnings.warn(msg)
      running install
      running build
      running config_cc
      unifing config_cc, config, build_clib, build_ext, build commands --compiler options
      running config_fc
      unifing config_fc, config, build_clib, build_ext, build commands --fcompiler options
      running build_src
      build_src
      building py_modules sources
      building library "npymath" sources
      No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
      error: Microsoft Visual C++ 14.0 or greater is required. Get it with "Microsoft C++ Build Tools": https://visualstudio.microsoft.com/visual-cpp-build-tools/
      ----------------------------------------
  ERROR: Command errored out with exit status 1: 'c:\users\...\documents\django\...-gui\scripts\python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\Users\...\AppData\Local\Temp\pip-install-y2da6o7k\numpy_cd5da68dc4b348859cbb9a5179b5032c\setup.py'"'"'; __file__='"'"'C:\Users\...\AppData\Local\Temp\pip-install-y2da6o7k\numpy_cd5da68dc4b348859cbb9a5179b5032c\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\...\AppData\Local\Temp\pip-record-coizi8ln\install-record.txt' --single-version-externally-managed --prefix 'C:\Users\...\AppData\Local\Temp\pip-build-env-33savj39\overlay' --compile --install-headers 'C:\Users\...\AppData\Local\Temp\pip-build-env-33savj39\overlay\include\site\python3.9\numpy' Check the logs for full command output.
  ----------------------------------------
WARNING: Discarding https://files.pythonhosted.org/packages/93/63/4a566494594a13697c5d5d8a754d6e329d018ddf881520775e0229fa29ef/scipy-1.5.3.tar.gz#sha256=ddae76784574cc4c172f3d5edd7308be16078dd3b977e8746860c76c195fa707 (from https://pypi.org/simple/scipy/) (requires-python:>=3.6). Command errored out with exit status 1: 'c:\users\...\documents\django\...-gui\scripts\python.exe' 'c:\users\...\documents\django\...-gui\lib\site-packages\pip' install --ignore-installed --no-user --prefix 'C:\Users\...\AppData\Local\Temp\pip-build-env-33savj39\overlay' --no-warn-script-location --no-binary :none: --only-binary :none: -i https://pypi.org/simple -- wheel setuptools 'Cython>=0.29.18' 'numpy==1.14.5; python_version=='"'"'3.6'"'"' and platform_system!='"'"'AIX'"'"'' 'numpy==1.14.5; python_version=='"'"'3.7'"'"' and platform_system!='"'"'AIX'"'"'' 'numpy==1.17.3; python_version>='"'"'3.8'"'"' and platform_system!='"'"'AIX'"'"'' 'numpy==1.16.0; python_version=='"'"'3.6'"'"' and platform_system=='"'"'AIX'"'"'' 'numpy==1.16.0; python_version=='"'"'3.7'"'"' and platform_system=='"'"'AIX'"'"'' 'numpy==1.17.3; python_version>='"'"'3.8'"'"' and platform_system=='"'"'AIX'"'"'' 'pybind11>=2.4.3' Check the logs for full command output.
ERROR: Could not find a version that satisfies the requirement scipy==1.5.3
ERROR: No matching distribution found for scipy==1.5.3

在你的 requirements.txt 中更改 scipy 行 scipy==1.6.0 并保存。 现在重试 pip 安装。

我安装了 Python 3.8。它与 Python- 和 scipy 版本之间的不兼容有关。之后就成功了。