Question: I'm new to python, and I'm trying to run some basic codes that require some libraries. And when I'm trying to install a library (e.g. pip install matplotlib-venn) I get this long error:  ERROR: Command errored out with exit status 1: command: 'c:\users\scurt\appdata\local\programs\python\python39\python.exe' -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\scurt\\AppData\\Local\\Temp\\pip-install-msmwhfl3\\matplotlib\\setup.py'"'"'; __file__='"'"'C:\\Users\\scurt\\AppData\\Local\\Temp\\pip-install-msmwhfl3\\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\scurt\AppData\Local\Temp\pip-pip-egg-info-g0f_wde0' cwd: C:\Users\scurt\AppData\Local\Temp\pip-install-msmwhfl3\matplotlib\ Complete output (249 lines): WARNING: The wheel package is not available. ERROR: Command errored out with exit status 1: command: 'c:\users\scurt\appdata\local\programs\python\python39\python.exe' 'c:\users\scurt\appdata\local\programs\python\python39\lib\site-packages\pip\_vendor\pep517\_in_process.py' prepare_metadata_for_build_wheel 'C:\Users\scurt\AppData\Local\Temp\tmpd9x4v47l' cwd: C:\Users\scurt\AppData\Local\Temp\pip-wheel-24k214oa\numpy Complete output (200 lines): 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() Processing numpy/random\_bounded_integers.pxd.in Processing numpy/random\bit_generator.pyx Processing numpy/random\mtrand.pyx Processing numpy/random\_bounded_integers.pyx.in Processing numpy/random\_common.pyx Processing numpy/random\_generator.pyx Processing numpy/random\_mt19937.pyx Processing numpy/random\_pcg64.pyx Processing numpy/random\_philox.pyx Processing numpy/random\_sfc64.pyx Cythonizing sources 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\\scurt\\appdata\\local\\programs\\python\\python39\\lib', 'C:\\', 'c:\\users\\scurt\\appdata\\local\\programs\\python\\python39\\libs'] NOT AVAILABLE blis_info: libraries blis not found in ['c:\\users\\scurt\\appdata\\local\\programs\\python\\python39\\lib', 'C:\\', 'c:\\users\\scurt\\appdata\\local\\programs\\python\\python39\\libs'] NOT AVAILABLE openblas_info: libraries openblas not found in ['c:\\users\\scurt\\appdata\\local\\programs\\python\\python39\\lib', 'C:\\', 'c:\\users\\scurt\\appdata\\local\\programs\\python\\python39\\libs'] 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 libraries tatlas not found in ['c:\\users\\scurt\\appdata\\local\\programs\\python\\python39\\lib', 'C:\\', 'c:\\users\\scurt\\appdata\\local\\programs\\python\\python39\\libs'] NOT AVAILABLE atlas_3_10_blas_info: libraries satlas not found in ['c:\\users\\scurt\\appdata\\local\\programs\\python\\python39\\lib', 'C:\\', 'c:\\users\\scurt\\appdata\\local\\programs\\python\\python39\\libs'] NOT AVAILABLE atlas_blas_threads_info: Setting PTATLAS=ATLAS libraries ptf77blas,ptcblas,atlas not found in ['c:\\users\\scurt\\appdata\\local\\programs\\python\\python39\\lib', 'C:\\', 'c:\\users\\scurt\\appdata\\local\\programs\\python\\python39\\libs'] NOT AVAILABLE atlas_blas_info: libraries f77blas,cblas,atlas not found in ['c:\\users\\scurt\\appdata\\local\\programs\\python\\python39\\lib', 'C:\\', 'c:\\users\\scurt\\appdata\\local\\programs\\python\\python39\\libs'] NOT AVAILABLE accelerate_info: NOT AVAILABLE C:\Users\scurt\AppData\Local\Temp\pip-wheel-24k214oa\numpy\numpy\distutils\system_info.py:1914: 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. if self._calc_info(blas): blas_info: libraries blas not found in ['c:\\users\\scurt\\appdata\\local\\programs\\python\\python39\\lib', 'C:\\', 'c:\\users\\scurt\\appdata\\local\\programs\\python\\python39\\libs'] NOT AVAILABLE C:\Users\scurt\AppData\Local\Temp\pip-wheel-24k214oa\numpy\numpy\distutils\system_info.py:1914: 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. if self._calc_info(blas): blas_src_info: NOT AVAILABLE C:\Users\scurt\AppData\Local\Temp\pip-wheel-24k214oa\numpy\numpy\distutils\system_info.py:1914: 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. if self._calc_info(blas): NOT AVAILABLE non-existing path in 'numpy\\distutils': 'site.cfg' lapack_opt_info: lapack_mkl_info: libraries mkl_rt not found in ['c:\\users\\scurt\\appdata\\local\\programs\\python\\python39\\lib', 'C:\\', 'c:\\users\\scurt\\appdata\\local\\programs\\python\\python39\\libs'] NOT AVAILABLE openblas_lapack_info: libraries openblas not found in ['c:\\users\\scurt\\appdata\\local\\programs\\python\\python39\\lib', 'C:\\', 'c:\\users\\scurt\\appdata\\local\\programs\\python\\python39\\libs'] NOT AVAILABLE openblas_clapack_info: libraries openblas,lapack not found in ['c:\\users\\scurt\\appdata\\local\\programs\\python\\python39\\lib', 'C:\\', 'c:\\users\\scurt\\appdata\\local\\programs\\python\\python39\\libs'] NOT AVAILABLE flame_info: libraries flame not found in ['c:\\users\\scurt\\appdata\\local\\programs\\python\\python39\\lib', 'C:\\', 'c:\\users\\scurt\\appdata\\local\\programs\\python\\python39\\libs'] NOT AVAILABLE atlas_3_10_threads_info: Setting PTATLAS=ATLAS libraries lapack_atlas not found in c:\users\scurt\appdata\local\programs\python\python39\lib libraries tatlas,tatlas not found in c:\users\scurt\appdata\local\programs\python\python39\lib libraries lapack_atlas not found in C:\ libraries tatlas,tatlas not found in C:\ libraries lapack_atlas not found in c:\users\scurt\appdata\local\programs\python\python39\libs libraries tatlas,tatlas not found in c:\users\scurt\appdata\local\programs\python\python39\libs <class 'numpy.distutils.system_info.atlas_3_10_threads_info'> NOT AVAILABLE atlas_3_10_info: libraries lapack_atlas not found in c:\users\scurt\appdata\local\programs\python\python39\lib libraries satlas,satlas not found in c:\users\scurt\appdata\local\programs\python\python39\lib libraries lapack_atlas not found in C:\ libraries satlas,satlas not found in C:\ libraries lapack_atlas not found in c:\users\scurt\appdata\local\programs\python\python39\libs libraries satlas,satlas not found in c:\users\scurt\appdata\local\programs\python\python39\libs <class 'numpy.distutils.system_info.atlas_3_10_info'> NOT AVAILABLE atlas_threads_info: Setting PTATLAS=ATLAS libraries lapack_atlas not found in c:\users\scurt\appdata\local\programs\python\python39\lib libraries ptf77blas,ptcblas,atlas not found in c:\users\scurt\appdata\local\programs\python\python39\lib libraries lapack_atlas not found in C:\ libraries ptf77blas,ptcblas,atlas not found in C:\ libraries lapack_atlas not found in c:\users\scurt\appdata\local\programs\python\python39\libs libraries ptf77blas,ptcblas,atlas not found in c:\users\scurt\appdata\local\programs\python\python39\libs <class 'numpy.distutils.system_info.atlas_threads_info'> NOT AVAILABLE atlas_info: libraries lapack_atlas not found in c:\users\scurt\appdata\local\programs\python\python39\lib libraries f77blas,cblas,atlas not found in c:\users\scurt\appdata\local\programs\python\python39\lib libraries lapack_atlas not found in C:\ libraries f77blas,cblas,atlas not found in C:\ libraries lapack_atlas not found in c:\users\scurt\appdata\local\programs\python\python39\libs libraries f77blas,cblas,atlas not found in c:\users\scurt\appdata\local\programs\python\python39\libs <class 'numpy.distutils.system_info.atlas_info'> NOT AVAILABLE lapack_info: libraries lapack not found in ['c:\\users\\scurt\\appdata\\local\\programs\\python\\python39\\lib', 'C:\\', 'c:\\users\\scurt\\appdata\\local\\programs\\python\\python39\\libs'] NOT AVAILABLE C:\Users\scurt\AppData\Local\Temp\pip-wheel-24k214oa\numpy\numpy\distutils\system_info.py:1748: 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. return getattr(self, '_calc_info_{}'.format(name))() lapack_src_info: NOT AVAILABLE C:\Users\scurt\AppData\Local\Temp\pip-wheel-24k214oa\numpy\numpy\distutils\system_info.py:1748: 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. return getattr(self, '_calc_info_{}'.format(name))() NOT AVAILABLE numpy_linalg_lapack_lite: FOUND: language = c define_macros = [('HAVE_BLAS_ILP64', None), ('BLAS_SYMBOL_SUFFIX', '64_')] c:\users\scurt\appdata\local\programs\python\python39\lib\distutils\dist.py:274: UserWarning: Unknown distribution option: 'define_macros' warnings.warn(msg) running dist_info 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 error: Microsoft Visual C++ 14.0 is required. Get it with "Build Tools for Visual Studio": https://visualstudio.microsoft.com/downloads/ ---------------------------------------- ERROR: Command errored out with exit status 1: 'c:\users\scurt\appdata\local\programs\python\python39\python.exe' 'c:\users\scurt\appdata\local\programs\python\python39\lib\site-packages\pip\_vendor\pep517\_in_process.py' prepare_metadata_for_build_wheel 'C:\Users\scurt\AppData\Local\Temp\tmpd9x4v47l' Check the logs for full command output. Traceback (most recent call last): File "c:\users\scurt\appdata\local\programs\python\python39\lib\site-packages\setuptools\installer.py", line 126, in fetch_build_egg subprocess.check_call(cmd) File "c:\users\scurt\appdata\local\programs\python\python39\lib\subprocess.py", line 373, in check_call raise CalledProcessError(retcode, cmd) subprocess.CalledProcessError: Command '['c:\\users\\scurt\\appdata\\local\\programs\\python\\python39\\python.exe', '-m', 'pip', '--disable-pip-version-check', 'wheel', '--no-deps', '-w', 'C:\\Users\\scurt\\AppData\\Local\\Temp\\tmpnf74y62m', '--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:\Users\scurt\AppData\Local\Temp\pip-install-msmwhfl3\matplotlib\setup.py", line 242, in <module> setup( # Finally, pass this all along to distutils to do the heavy lifting. File "c:\users\scurt\appdata\local\programs\python\python39\lib\site-packages\setuptools\__init__.py", line 152, in setup _install_setup_requires(attrs) File "c:\users\scurt\appdata\local\programs\python\python39\lib\site-packages\setuptools\__init__.py", line 147, in _install_setup_requires dist.fetch_build_eggs(dist.setup_requires) File "c:\users\scurt\appdata\local\programs\python\python39\lib\site-packages\setuptools\dist.py", line 673, in fetch_build_eggs resolved_dists = pkg_resources.working_set.resolve( File "c:\users\scurt\appdata\local\programs\python\python39\lib\site-packages\pkg_resources\__init__.py", line 764, in resolve dist = best[req.key] = env.best_match( File "c:\users\scurt\appdata\local\programs\python\python39\lib\site-packages\pkg_resources\__init__.py", line 1049, in best_match return self.obtain(req, installer) File "c:\users\scurt\appdata\local\programs\python\python39\lib\site-packages\pkg_resources\__init__.py", line 1061, in obtain return installer(requirement) File "c:\users\scurt\appdata\local\programs\python\python39\lib\site-packages\setuptools\dist.py", line 732, in fetch_build_egg return fetch_build_egg(self, req) File "c:\users\scurt\appdata\local\programs\python\python39\lib\site-packages\setuptools\installer.py", line 128, in fetch_build_egg raise DistutilsError(str(e)) from e distutils.errors.DistutilsError: Command '['c:\\users\\scurt\\appdata\\local\\programs\\python\\python39\\python.exe', '-m', 'pip', '--disable-pip-version-check', 'wheel', '--no-deps', '-w', 'C:\\Users\\scurt\\AppData\\Local\\Temp\\tmpnf74y62m', '--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.  I tried to reinstall python multiple times (I'm using the latest version 3.9). I updated the path variables as I've seen in other posts. I tried to run the same command but with pip3, same thing.

Answer: I had a similar problem while trying to run "pip install seaborn". The problem is that the new Python 3.9 does not provide binary wheels scipy and numpy do not as discussed here. What I did was uninstall Python 3.9 and reinstall Python 3.8 and everything worked perfectly.