Для справки:

$ cat /etc/redhat-release 
ALT Workstation 8.1

Устанавливаю bpython3, всего прилетает 33 пакета по зависимостям.
Далее запускаю в консоли bpython3, наблюдаю такой Traceback:

$ bpython3
Traceback (most recent call last):
  File "/usr/bin/bpython3", line 5, in <module>
    from pkg_resources import load_entry_point
  File "/usr/lib/python3/site-packages/pkg_resources/__init__.py", line 3084, in <module>
    @_call_aside
  File "/usr/lib/python3/site-packages/pkg_resources/__init__.py", line 3070, in _call_aside
    f(*args, **kwargs)
  File "/usr/lib/python3/site-packages/pkg_resources/__init__.py", line 3097, in _initialize_master_working_set
    working_set = WorkingSet._build_master()
  File "/usr/lib/python3/site-packages/pkg_resources/__init__.py", line 651, in _build_master
    ws.require(__requires__)
  File "/usr/lib/python3/site-packages/pkg_resources/__init__.py", line 952, in require
    needed = self.resolve(parse_requirements(requirements))
  File "/usr/lib/python3/site-packages/pkg_resources/__init__.py", line 839, in resolve
    raise DistributionNotFound(req, requirers)
pkg_resources.DistributionNotFound: The 'requests' distribution was not found and is required by bpython


Далее, устанавливаю ручками python3-module-requests (apt-get install python3-module-requests), прилетает ещё 11 пакетов по зависимостям. И запускаю bpython3:

$ bpython3
bpython version 0.14.1 on top of Python 3.5.1 /usr/bin/python3
>>> 

Вуаля. Предлагаю проверить пакет.