$ pip install boto3 # you don't even need a ~/.aws/credentials file
$ bpython
bpython version 0.16 on top of Python 2.7.12 /usr/local/opt/python/bin/python2.7
>>> import boto3
>>> s3=boto3.resource('s3')
>>> obj=s3.Object('bucket','key') # this can literally be those 2 strings
>>> obj.get(
Traceback (most recent call last):
  File "/usr/local/bin/bpython", line 11, in <module>
    sys.exit(main())
  File "/usr/local/lib/python2.7/site-packages/bpython/curtsies.py", line 190, in main
    exit_value = repl.mainloop()
  File "/usr/local/lib/python2.7/site-packages/bpython/curtsies.py", line 125, in mainloop
    self.process_event_and_paint(e)
  File "/usr/local/lib/python2.7/site-packages/bpython/curtsies.py", line 99, in process_event_and_paint
    array, cursor_pos = self.paint()
  File "/usr/local/lib/python2.7/site-packages/bpython/curtsiesfrontend/repl.py", line 1447, in paint
    if self.matches_iter.completer else None)
  File "/usr/local/lib/python2.7/site-packages/bpython/curtsiesfrontend/replpainter.py", line 179, in paint_infobox
    if docstring else [])
  File "/usr/local/lib/python2.7/site-packages/bpython/curtsiesfrontend/replpainter.py", line 167, in formatted_docstring
    for line in docstring.split('\n')), [])
UnicodeDecodeError: 'ascii' codec can't decode byte 0xe2 in position 2822: ordinal not in range(128)