If I do this, bpython3 starts using 100% of my CPU and hangs completely until I kill it. If I run it from the python REPL, it works.

callum@destroyer2[15:59:26] ~
 $ bpython3
bpython version 0.17 on top of Python 3.6.3 /usr/bin/python3
>>> import requests
>>> r = requests.get('http://google.com')
>>> r.content

Ubuntu 17.10, bpython 0.17, Python 3.6.3, requests 2.18.4

It might be something to do with requests.get only requesting the body after calling .content, otherwise it just gets the headers.