Make flake8 happy about test_rand.py
Make flake8 happy about test_rand.py

aalba6675/pyopenssl,mhils/pyopenssl,pyca/pyopenssl,reaperhulk/pyopenssl,mitghi/pyopenssl,r0ro/pyopenssl,reaperhulk/pyopenssl,mhils/pyopenssl,mitghi/pyopenssl,r0ro/pyopenssl,aalba6675/pyopenssl,hynek/pyopenssl,hynek/pyopenssl