title: Some problems with numpy install
body: <p>When I try to install numpy with <code>pip install numpy</code> with <em>Python 3.9</em> I got this error:</p>
  <pre><code>ERROR: Command errored out with exit status 1:
       command: 'c: 'c:prepare_metadata_for_build_wheel 'C
           cwd:
      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
  </code></pre>
  <p>I watched a lot of tutorials and search some similar problems on stackoverflow, but I can't find an answer.</p>