Problème d'installation de modules avec pip

Bonjour,

N'ayant que de simples notions de python, je cherche à progresser avec ce langage de programmation.
Je souhaiterais installer Matplotlib, afin de tracer des représentations graphiques de fonctions notamment.
Cependant, impossible d'installer ce module via la commande saisie "pip install matplotlib"
Après désinstallation de python 3.9 puis réinstallation, toujours le même échec :

ERROR: Command errored out with exit status 1:
command: 'c:\users\flori\appdata\local\programs\python\python39\python.exe' -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\flori\\AppData\\Local\\Temp\\pip-insta
ll-wdlw9j7o\\matplotlib\\setup.py'"'"'; __file__='"'"'C:\\Users\\flori\\AppData\\Local\\Temp\\pip-install-wdlw9j7o\\matplotlib\\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__f
ile__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' egg_info --egg-base 'C:\Users\flori\AppData\Local\Temp\pip-pip-egg-info
-gamkodlk'
cwd: C:\Users\flori\AppData\Local\Temp\pip-install-wdlw9j7o\matplotlib\
Complete output (248 lines):
ERROR: Command errored out with exit status 1:
command: 'c:\users\flori\appdata\local\programs\python\python39\python.exe' 'c:\users\flori\appdata\local\programs\python\python39\lib\site-packages\pip\_vendor\pep517\_in_proces
s.py' prepare_metadata_for_build_wheel 'C:\Users\flori\AppData\Local\Temp\tmpy3r7drp1'
cwd: C:\Users\flori\AppData\Local\Temp\pip-wheel-_otumpta\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\\flori\\appdata\\local\\programs\\python\\python39\\lib', 'C:\\', 'c:\\users\\flori\\appdata\\local\\programs\\python\\python39\\libs']

NOT AVAILABLE

blis_info:
libraries blis not found in ['c:\\users\\flori\\appdata\\local\\programs\\python\\python39\\lib', 'C:\\', 'c:\\users\\flori\\appdata\\local\\programs\\python\\python39\\libs']
NOT AVAILABLE

openblas_info:
libraries openblas not found in ['c:\\users\\flori\\appdata\\local\\programs\\python\\python39\\lib', 'C:\\', 'c:\\users\\flori\\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\\flori\\appdata\\local\\programs\\python\\python39\\lib', 'C:\\', 'c:\\users\\flori\\appdata\\local\\programs\\python\\python39\\libs']

NOT AVAILABLE

atlas_3_10_blas_info:
libraries satlas not found in ['c:\\users\\flori\\appdata\\local\\programs\\python\\python39\\lib', 'C:\\', 'c:\\users\\flori\\appdata\\local\\programs\\python\\python39\\libs']

NOT AVAILABLE

atlas_blas_threads_info:
Setting PTATLAS=ATLAS
libraries ptf77blas,ptcblas,atlas not found in ['c:\\users\\flori\\appdata\\local\\programs\\python\\python39\\lib', 'C:\\', 'c:\\users\\flori\\appdata\\local\\programs\\python\
\python39\\libs']
NOT AVAILABLE

atlas_blas_info:
libraries f77blas,cblas,atlas not found in ['c:\\users\\flori\\appdata\\local\\programs\\python\\python39\\lib', 'C:\\', 'c:\\users\\flori\\appdata\\local\\programs\\python\\pyt
hon39\\libs']
NOT AVAILABLE

accelerate_info:
NOT AVAILABLE

C:\Users\flori\AppData\Local\Temp\pip-wheel-_otumpta\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\\flori\\appdata\\local\\programs\\python\\python39\\lib', 'C:\\', 'c:\\users\\flori\\appdata\\local\\programs\\python\\python39\\libs']
NOT AVAILABLE

C:\Users\flori\AppData\Local\Temp\pip-wheel-_otumpta\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\flori\AppData\Local\Temp\pip-wheel-_otumpta\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\\flori\\appdata\\local\\programs\\python\\python39\\lib', 'C:\\', 'c:\\users\\flori\\appdata\\local\\programs\\python\\python39\\libs']

NOT AVAILABLE

openblas_lapack_info:
libraries openblas not found in ['c:\\users\\flori\\appdata\\local\\programs\\python\\python39\\lib', 'C:\\', 'c:\\users\\flori\\appdata\\local\\programs\\python\\python39\\libs
']
NOT AVAILABLE

openblas_clapack_info:
libraries openblas,lapack not found in ['c:\\users\\flori\\appdata\\local\\programs\\python\\python39\\lib', 'C:\\', 'c:\\users\\flori\\appdata\\local\\programs\\python\\python3
9\\libs']
NOT AVAILABLE

flame_info:
libraries flame not found in ['c:\\users\\flori\\appdata\\local\\programs\\python\\python39\\lib', 'C:\\', 'c:\\users\\flori\\appdata\\local\\programs\\python\\python39\\libs']
NOT AVAILABLE

atlas_3_10_threads_info:
Setting PTATLAS=ATLAS
libraries lapack_atlas not found in c:\users\flori\appdata\local\programs\python\python39\lib
libraries tatlas,tatlas not found in c:\users\flori\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\flori\appdata\local\programs\python\python39\libs
libraries tatlas,tatlas not found in c:\users\flori\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\flori\appdata\local\programs\python\python39\lib
libraries satlas,satlas not found in c:\users\flori\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\flori\appdata\local\programs\python\python39\libs
libraries satlas,satlas not found in c:\users\flori\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\flori\appdata\local\programs\python\python39\lib
libraries ptf77blas,ptcblas,atlas not found in c:\users\flori\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\flori\appdata\local\programs\python\python39\libs
libraries ptf77blas,ptcblas,atlas not found in c:\users\flori\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\flori\appdata\local\programs\python\python39\lib
libraries f77blas,cblas,atlas not found in c:\users\flori\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\flori\appdata\local\programs\python\python39\libs
libraries f77blas,cblas,atlas not found in c:\users\flori\appdata\local\programs\python\python39\libs
<class 'numpy.distutils.system_info.atlas_info'>
NOT AVAILABLE

lapack_info:
libraries lapack not found in ['c:\\users\\flori\\appdata\\local\\programs\\python\\python39\\lib', 'C:\\', 'c:\\users\\flori\\appdata\\local\\programs\\python\\python39\\libs']

NOT AVAILABLE

C:\Users\flori\AppData\Local\Temp\pip-wheel-_otumpta\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\flori\AppData\Local\Temp\pip-wheel-_otumpta\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\flori\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\flori\appdata\local\programs\python\python39\python.exe' 'c:\users\flori\appdata\local\programs\python\python39\lib\site-packa
ges\pip\_vendor\pep517\_in_process.py' prepare_metadata_for_build_wheel 'C:\Users\flori\AppData\Local\Temp\tmpy3r7drp1' Check the logs for full command output.
Traceback (most recent call last):
File "c:\users\flori\appdata\local\programs\python\python39\lib\site-packages\setuptools\installer.py", line 128, in fetch_build_egg
subprocess.check_call(cmd)
File "c:\users\flori\appdata\local\programs\python\python39\lib\subprocess.py", line 373, in check_call
raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['c:\\users\\flori\\appdata\\local\\programs\\python\\python39\\python.exe', '-m', 'pip', '--disable-pip-version-check', 'wheel', '--no-deps',
'-w', 'C:\\Users\\flori\\AppData\\Local\\Temp\\tmpnlfvp1mn', '--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\flori\AppData\Local\Temp\pip-install-wdlw9j7o\matplotlib\setup.py", line 242, in <module>
setup( # Finally, pass this all along to distutils to do the heavy lifting.
File "c:\users\flori\appdata\local\programs\python\python39\lib\site-packages\setuptools\__init__.py", line 164, in setup
_install_setup_requires(attrs)
File "c:\users\flori\appdata\local\programs\python\python39\lib\site-packages\setuptools\__init__.py", line 159, in _install_setup_requires
dist.fetch_build_eggs(dist.setup_requires)
File "c:\users\flori\appdata\local\programs\python\python39\lib\site-packages\setuptools\dist.py", line 699, in fetch_build_eggs
resolved_dists = pkg_resources.working_set.resolve(
File "c:\users\flori\appdata\local\programs\python\python39\lib\site-packages\pkg_resources\__init__.py", line 779, in resolve
dist = best[req.key] = env.best_match(
File "c:\users\flori\appdata\local\programs\python\python39\lib\site-packages\pkg_resources\__init__.py", line 1064, in best_match
return self.obtain(req, installer)
File "c:\users\flori\appdata\local\programs\python\python39\lib\site-packages\pkg_resources\__init__.py", line 1076, in obtain
return installer(requirement)
File "c:\users\flori\appdata\local\programs\python\python39\lib\site-packages\setuptools\dist.py", line 758, in fetch_build_egg
return fetch_build_egg(self, req)
File "c:\users\flori\appdata\local\programs\python\python39\lib\site-packages\setuptools\installer.py", line 130, in fetch_build_egg
raise DistutilsError(str(e)) from e
distutils.errors.DistutilsError: Command '['c:\\users\\flori\\appdata\\local\\programs\\python\\python39\\python.exe', '-m', 'pip', '--disable-pip-version-check', 'wheel', '--no-deps'
, '-w', 'C:\\Users\\flori\\AppData\\Local\\Temp\\tmpnlfvp1mn', '--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.

Je suis donc sous Windows, python 3.9,
Quelqu'un comprend-il pourquoi cela ne fonctionne pas ?
Merci d'avance, je cherche depuis un moment sur différents forums sans comprendre le problème...