How to test Python readline completion?

Question

I\'m writing a command-line interface in Python. It uses the readline module to provide command history and completion.

While everything works fine in interactive mode,

Answer 1

rlcompleter might accomplish what you want

From the documentation:

The rlcompleter module is designed for use with Python’s interactive mode. A user can add the following lines to his or her initialization file (identified by the PYTHONSTARTUP environment variable) to get automatic Tab completion:

try:
    import readline
except ImportError:
    print "Module readline not available."
else:
    import rlcompleter
    readline.parse_and_bind("tab: complete")

https://docs.python.org/2/library/rlcompleter.html