urllib.error.URLError: <urlopen error [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1108)

Here are the steps for the MacOs:

1. Open the finder
2. Find the version of Python that you are using
3. Click on the arrow beside Python
4. A list will show up under the Python
5. Click on the "Install Certificates.command". It will open a terminal and install the certificate.

In my case, I had to do this 2 times before it works. Here is a screenshot from the Finder:

A quick google search returns the following: http://blog.wafrat.com/fixing-certificate_verify_failed-when-using-yfinances-ticker-info/

As explained in the website linked above, the issue is due to:

It turns out it's because I am running Python on Mac OS and I need to install some certificates (Mac OSX python ssl.SSLError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:749)).

And the solution is to:

So I opened Finder and navigated to Applications, Python 3.7, then ran Install Certificates.command. And it worked indeed!

I had this problem using Anaconda with Python 3.9, and on Windows - the solution for me was in this answer: How to get and save LetsEncrypt certificates on Windows.

The process is:

• Download "ISRG Root X1", "ISRG Root X2", "Let’s Encrypt R3" (.der files) from https://letsencrypt.org/certificates/
• Follow instructions here: https://www.sonicwall.com/support/knowledge-base/how-can-i-import-certificates-into-the-ms-windows-local-machine-certificate-store/170504615105398/

For this part import the ISRG certs into the 'Certificates/Personal' folder, and import the Let's Encrypt R3 cert into the 'Trusted Root Certification Authorities/Certificates' folder.

• Restart system.

This answer got me from 2nd base home, but it skips over that the full path one would want is /Applications/Python 3.x/Install Certificates.command (which was called out in an other question's answer

(I was initially looking in the folder symlinked from /usr/local/bin/python3)