Requesting a function to be added to the readline module that produces a dictionary of the current keystroke bindings Also, one to write it to a file in readline init file format. This would be a big help for people interested in customizing the behavior of readline inside Python.

A question came up on Python-ideas about readline apparently missing a standard function. See:

http://mail.python.org/pipermail/python-ideas/2012-October/016329.html

For debugging issues with readline, it would be be very useful to be able to query the current set of bindings. This would also help people avoid accidentally over-writing existing bindings.

I suggest emulating the three bash commands:

bind -p  # List functions and bindings in a form that can be reused as input.
bind -v  # As above for variable names and values.
bind -s  # As above for macros and values.

Here's what the original maintainer chet romney had to say about this functionality not being a part of readline, and should be implemented by the calling application. From Chet Ramey:
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The answer is that this is very similar to the operate-and-get-next
feature bash adds to the readline interface. I am not inclined to add this to
readline in its current form because it manipulates state managed by
the calling application (rl_startup_hook) and requires that state to be
kept between calls to readline(). It's a feature that should be provided
by the calling application -- it's implementation is not complicated.