Python Requests – How to use system ca-certificates (debian/ubuntu)?

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From https://stackoverflow.com/a/33717517/1695680

To make python requests use the system ca-certificates bundle, it needs to be told to use it over its own embedded bundle

export REQUESTS_CA_BUNDLE=/etc/ssl/certs/ca-certificates.crt

Requests embeds its bundles here, for reference:

/usr/local/lib/python2.7/site-packages/requests/cacert.pem
/usr/lib/python3/dist-packages/requests/cacert.pem

Or in newer versions use additional package to obtain certificates from:
https://github.com/certifi/python-certifi

To verify from which file certificates are loaded, you can try:

Python 3.8.5 (default, Jul 28 2020, 12:59:40) 
>>> import certifi
>>> certifi.where()
'/etc/ssl/certs/ca-certificates.crt'

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