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Python, Error while installing matplotlib

OS: Windows 10

Python ver: 3.9.0

Error code:

ERROR: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output. 

I tried:

python -m pip install -U pip
python -m pip install -U matplotlib

didn’t work.

and then I tried:

pip install --upgrade setuptools

didn’t solve the problem.

I read on SO that maybe if I open the shell in administrator mode it could solve the problem but it didn’t work too.

I saw someone mentioning ez-setup for this error code. I installed it but that didn’t work too.

I don’t know if it has something to do but my C directory looks like this:

C:UsersMETİNUSTA

It has an uppercase i character which sometimes can cause problems with applications. I can’t change it because I am using my school’s Windows key and it don’t let me do any change. Because of this I installed python on D: .

Also here my pip list for extra information:

ez-setup    0.9
flake8      3.8.4
mccabe      0.6.1
pip         20.2.4
pycodestyle 2.6.0
pyflakes    2.2.0
setuptools  50.3.2
wheel       0.35.1

and finally whole error log that I get on windows powershell:

    ERROR: Command errored out with exit status 1:
     command: 'd:pythonpython39python.exe' -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\Users\METİNUSTA\AppData\Local\Temp\pip-install-8iv10tb_\matplotlib\setup.py'"'"'; __file__='"'"'C:\Users\METİNUSTA\AppData\Local\Temp\pip-install-8iv10tb_\matplotlib\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'rn'"'"', '"'"'n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' egg_info --egg-base 'C:UsersMETİNUSTAAppDataLocalTemppip-pip-egg-info-elosrn6m'
         cwd: C:UsersMETİNUSTAAppDataLocalTemppip-install-8iv10tb_matplotlib
    Complete output (99 lines):
      WARNING: Missing build requirements in pyproject.toml for numpy>=1.15 from https://files.pythonhosted.org/packages/bf/e8/15aea783ea72e2d4e51e3ec365e8dc4a1a32c9e5eb3a6d695b0d58e67cdd/numpy-1.19.2.zip#sha256=0d310730e1e793527065ad7dde736197b705d0e4c9999775f212b03c44a8484c.
      WARNING: The project does not specify a build backend, and pip cannot fall back to setuptools without 'setuptools>=40.8.0' and 'wheel'.
        ERROR: Command errored out with exit status 1:
         command: 'd:pythonpython39python.exe' 'd:pythonpython39libsite-packagespip_vendorpep517_in_process.py' prepare_metadata_for_build_wheel 'C:UsersMETNUS~1AppDataLocalTemptmpqz3brme_'
             cwd: C:UsersMETİNUSTAAppDataLocalTemppip-wheel-l2wpf1i8numpy
        Complete output (49 lines):
        Error in sitecustomize; set PYTHONVERBOSE for traceback:
        SyntaxError: (unicode error) 'utf-8' codec can't decode byte 0xdd in position 0: unexpected end of data (sitecustomize.py, line 21)
        Running from numpy source directory.
        setup.py:470: UserWarning: Unrecognized setuptools command, proceeding with generating Cython sources and expanding templates
          run_build = parse_setuppy_commands()
        Error in sitecustomize; set PYTHONVERBOSE for traceback:
        SyntaxError: (unicode error) 'utf-8' codec can't decode byte 0xdd in position 0: unexpected end of data (sitecustomize.py, line 21)
        Processing numpy/random_bounded_integers.pxd.in
        Processing numpy/randombit_generator.pyx
        Traceback (most recent call last):
          File "C:UsersMETİNUSTAAppDataLocalTemppip-wheel-l2wpf1i8numpytoolscythonize.py", line 59, in process_pyx
            from Cython.Compiler.Version import version as cython_version
        ModuleNotFoundError: No module named 'Cython'

        During handling of the above exception, another exception occurred:

        Traceback (most recent call last):
          File "C:UsersMETİNUSTAAppDataLocalTemppip-wheel-l2wpf1i8numpytoolscythonize.py", line 235, in <module>
            main()
          File "C:UsersMETİNUSTAAppDataLocalTemppip-wheel-l2wpf1i8numpytoolscythonize.py", line 231, in main
            find_process_files(root_dir)
          File "C:UsersMETİNUSTAAppDataLocalTemppip-wheel-l2wpf1i8numpytoolscythonize.py", line 222, in find_process_files
            process(root_dir, fromfile, tofile, function, hash_db)
          File "C:UsersMETİNUSTAAppDataLocalTemppip-wheel-l2wpf1i8numpytoolscythonize.py", line 188, in process
            processor_function(fromfile, tofile)
          File "C:UsersMETİNUSTAAppDataLocalTemppip-wheel-l2wpf1i8numpytoolscythonize.py", line 64, in process_pyx
            raise OSError('Cython needs to be installed in Python as a module')
        OSError: Cython needs to be installed in Python as a module
        Cythonizing sources
        Traceback (most recent call last):
          File "d:pythonpython39libsite-packagespip_vendorpep517_in_process.py", line 280, in <module>
            main()
          File "d:pythonpython39libsite-packagespip_vendorpep517_in_process.py", line 263, in main
            json_out['return_val'] = hook(**hook_input['kwargs'])
          File "d:pythonpython39libsite-packagespip_vendorpep517_in_process.py", line 133, in prepare_metadata_for_build_wheel
            return hook(metadata_directory, config_settings)
          File "d:pythonpython39libsite-packagessetuptoolsbuild_meta.py", line 161, in prepare_metadata_for_build_wheel
            self.run_setup()
          File "d:pythonpython39libsite-packagessetuptoolsbuild_meta.py", line 253, in run_setup
            super(_BuildMetaLegacyBackend,
          File "d:pythonpython39libsite-packagessetuptoolsbuild_meta.py", line 145, in run_setup
            exec(compile(code, __file__, 'exec'), locals())
          File "setup.py", line 499, in <module>
            setup_package()
          File "setup.py", line 479, in setup_package
            generate_cython()
          File "setup.py", line 274, in generate_cython
            raise RuntimeError("Running cythonize failed!")
        RuntimeError: Running cythonize failed!
        ----------------------------------------
    ERROR: Command errored out with exit status 1: 'd:pythonpython39python.exe' 'd:pythonpython39libsite-packagespip_vendorpep517_in_process.py' prepare_metadata_for_build_wheel 'C:UsersMETNUS~1AppDataLocalTemptmpqz3brme_' Check the logs for full command output.
    Traceback (most recent call last):
      File "d:pythonpython39libsite-packagessetuptoolsinstaller.py", line 126, in fetch_build_egg
        subprocess.check_call(cmd)
      File "d:pythonpython39libsubprocess.py", line 373, in check_call
        raise CalledProcessError(retcode, cmd)
    subprocess.CalledProcessError: Command '['d:\python\python39\python.exe', '-m', 'pip', '--disable-pip-version-check', 'wheel', '--no-deps', '-w', 'C:\Users\METNUS~1\AppData\Local\Temp\tmppoh8r2c9', '--quiet', 'numpy>=1.15']' returned non-zero exit status 1.

    The above exception was the direct cause of the following exception:

    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "C:UsersMETİNUSTAAppDataLocalTemppip-install-8iv10tb_matplotlibsetup.py", line 242, in <module>
        setup(  # Finally, pass this all along to distutils to do the heavy lifting.
      File "d:pythonpython39libsite-packagessetuptools__init__.py", line 152, in setup
        _install_setup_requires(attrs)
      File "d:pythonpython39libsite-packagessetuptools__init__.py", line 147, in _install_setup_requires
        dist.fetch_build_eggs(dist.setup_requires)
      File "d:pythonpython39libsite-packagessetuptoolsdist.py", line 673, in fetch_build_eggs
        resolved_dists = pkg_resources.working_set.resolve(
      File "d:pythonpython39libsite-packagespkg_resources__init__.py", line 764, in resolve
        dist = best[req.key] = env.best_match(
      File "d:pythonpython39libsite-packagespkg_resources__init__.py", line 1049, in best_match
        return self.obtain(req, installer)
      File "d:pythonpython39libsite-packagespkg_resources__init__.py", line 1061, in obtain
        return installer(requirement)
      File "d:pythonpython39libsite-packagessetuptoolsdist.py", line 732, in fetch_build_egg
        return fetch_build_egg(self, req)
      File "d:pythonpython39libsite-packagessetuptoolsinstaller.py", line 128, in fetch_build_egg
        raise DistutilsError(str(e)) from e
    distutils.errors.DistutilsError: Command '['d:\python\python39\python.exe', '-m', 'pip', '--disable-pip-version-check', 'wheel', '--no-deps', '-w', 'C:\Users\METNUS~1\AppData\Local\Temp\tmppoh8r2c9', '--quiet', 'numpy>=1.15']' returned non-zero exit status 1.

    Edit setup.cfg to change the build options; suppress output with --quiet.

    BUILDING MATPLOTLIB
      matplotlib: yes [3.3.2]
          python: yes [3.9.0 (tags/v3.9.0:9cf6752, Oct  5 2020, 15:34:40) [MSC
                      v.1927 64 bit (AMD64)]]
        platform: yes [win32]
     sample_data: yes [installing]
           tests: no  [skipping due to configuration]
          macosx: no  [Mac OS-X only]

    ----------------------------------------
ERROR: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.

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Answer

edit: matplotlib has now released wheels for python 3.9 so pip install --upgrade matplotlib should work.

original answer

matplotlib hasn’t made a wheel yet for version 3.9 so your python attempted to build it from source. You should downgrade to python 3.8 and then everything should work

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