Tab completion under pipenv?

macOS 10.12.6 Python 3.6.2 pipenv 6.1.6

When I run the CPython REPL from a standard shell tab completion is operative. When I run it via pipenv (pipenv run python3 or pipenv shell then python3) tab completion is not operative.

Is this a bug, or a configuration failure on my part?

[andyneff]

My hack and forget work around is to write a ~/.pyrc file

import sys, os

if (sys.version_info[0] == 2) or ('PIPENV_ACTIVE' in os.environ):
  try:
    import readline
  except ImportError:
    print("Module readline not available.")
  else:
    import rlcompleter
    readline.parse_and_bind("tab: complete")
    del readline, rlcompleter 
del sys, os

And to export PYTHONSTARTUP=~/.pyrc in my shell rc script (export PYTHONSTARTUP=~/.pyrc in ~/bashrc for the bash case)

[kennethreitz]

so apparently this code activates tab complete:

import rlcompleter, readline
readline.parse_and_bind('tab: complete')