[Python] Python Requests - SSL error for client side cert

I'm calling a REST API with requests in python and so far have been successful when I set verify=False.

Now, I have to use client side cert that I need to import for authentication and I'm getting this error everytime I'm using the cert (.pfx). cert.pfx is password protected.

r = requests.post(url, params=payload, headers=headers,
data=payload, verify='cert.pfx')


This is the error I'm getting:

Traceback (most recent call last):
File "C:\Users\me\Desktop\test.py", line 65, in <module>
r = requests.post(url, params=payload, headers=headers, data=payload, verify=cafile)
File "C:\Python33\lib\site-packages\requests\api.py", line 88, in post
return request('post', url, data=data, **kwargs)
File "C:\Python33\lib\site-packages\requests\api.py", line 44, in request
return session.request(method=method, url=url, **kwargs)
File "C:\Python33\lib\site-packages\requests\sessions.py", line 346, in request
resp = self.send(prep, **send_kwargs)
File "C:\Python33\lib\site-packages\requests\sessions.py", line 449, in send
r = adapter.send(request, **kwargs)
File "C:\Python33\lib\site-packages\requests\adapters.py", line 322, in send
raise SSLError(e)
requests.exceptions.SSLError: unknown error (_ssl.c:2158)


I've also tried openssl to get .pem and key but with .pem and getting SSL: CERTIFICATE_VERIFY_FAILED

Can someone please direct me on how to import the certs and where to place it? I tried searching but still faced with the same issue.

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