Description of problem:
The requests package issues a deprecation warning for PyOpenSSL's rand module. This causes issues with any package and software that treats a deprecation warning as an error. Amongst others it breaks custodia's package.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. python3 -Werror -c "import requests"
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "/usr/lib/python3.6/site-packages/requests/__init__.py", line 84, in <module>
from urllib3.contrib import pyopenssl
File "/usr/lib/python3.6/site-packages/urllib3/contrib/pyopenssl.py", line 46, in <module>
File "/usr/lib/python3.6/site-packages/OpenSSL/__init__.py", line 8, in <module>
from OpenSSL import rand, crypto, SSL
File "/usr/lib/python3.6/site-packages/OpenSSL/rand.py", line 19, in <module>
DeprecationWarning: OpenSSL.rand is deprecated - you should use os.urandom instead
This can be fixed by upgrading pyopenssl to a version >= 17.3.0  or by backporting the relevant commits 
I do not think deleting the rand module completely would be an option for Fedora 27.
This message is a reminder that Fedora 27 is nearing its end of life.
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