Read this if you get SSL related errors with pip install! !! !!

environment

mac OS Catalina python 3.6.5

Status

I left python for a while (about a year), but when I tried to install a new package pip install <package name>, I got this error ...

WARNING: pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available.
Collecting numpy-stl (package name you tried to install this time)
  WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can't connect to HTTPS URL because the SSL module is not available.",)': /simple/numpy-stl/
  WARNING: Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can't connect to HTTPS URL because the SSL module is not available.",)': /simple/numpy-stl/
  WARNING: Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can't connect to HTTPS URL because the SSL module is not available.",)': /simple/numpy-stl/
  WARNING: Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can't connect to HTTPS URL because the SSL module is not available.",)': /simple/numpy-stl/
  WARNING: Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can't connect to HTTPS URL because the SSL module is not available.",)': /simple/numpy-stl/
  Could not fetch URL https://pypi.org/simple/numpy-stl/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host='pypi.org', port=443): Max retries exceeded with url: /simple/numpy-stl/ (Caused by SSLError("Can't connect to HTTPS URL because the SSL module is not available.",)) - skipping
  ERROR: Could not find a version that satisfies the requirement numpy-stl (from versions: none)
ERROR: No matching distribution found for numpy-stl
WARNING: pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available.
Could not fetch URL https://pypi.org/simple/pip/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host='pypi.org', port=443): Max retries exceeded with url: /simple/pip/ (Caused by SSLError("Can't connect to HTTPS URL because the SSL module is not available.",)) - skipping

After investigating various things, as a solution --pip update --Add an option to trust the host when pip install --curl update --Create pip.conf I tried all of them because there were various things, but ** none of them worked. ** (Reference) Quite despair at this point. .. ..

Solution

After all, I solved it by raising the version of python and changing my mind with pip. (You may need to update Xcode's Command Line Tool on the way.) I was using pyenv, so

pyenv install 3.8.1
pyenv global 3.8.1
pip install (Packages you want to install)

The installation was completed successfully! !! !!

If you are desperate for the same problem, I would be happy if this could solve it. I hope you like it! !! please!

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