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Python.Engineering Wiki How to get Python requests to trust a self signed SSL certificate?

How to get Python requests to trust a self signed SSL certificate?

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Michael Zippo Michael Zippo 
import requests
data = {"foo":"bar"}
url = "https://foo.com/bar"
r = requests.post(url, data=data)

If the URL uses a self signed certificate, this fails with 

requests.exceptions.SSLError: [Errno 1] _ssl.c:507: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed

I know that I can pass False to the verify parameter, like this:

r = requests.post(url, data=data, verify=False)

However, what I would like to do is point requests to a copy of the public key on disk and tell it to trust that certificate.