This is the current repr of the configparser.ConfigParser instances:

>>> import configparser
>>> config = configparser.ConfigParser()
>>> config['sec'] = {}
>>> config
<configparser.ConfigParser object at 0x10b656ad0>


I think this could be improved to read:

<ConfigParser sections=('sec',)>

Why only sections? ConfigParser contains a lot of other information.

Section names you can get by calling the sections() method.

>>> config.sections()
['sec']

> Why only sections? ConfigParser contains a lot of other information.

Indeed, the defaults might be useful too. Other things like options
can be sessions specific and could clutter the repr if added.

Would defaults() and sections() be the right behavior between too
little information and too much?