On Tue, Sep 11, 2018 at 1:58 PM, Nicolas Hug <nio...@gmail.com> wrote:
> pprint({x: x for x in range(15)}, compact=True)
>
> would be be printed in 15 lines while it could fit on 2.
>
>
> Is this a bug or was this decided on purpose?It is on purpose as can be seen in the code for pprint [1], which calls _format [2], which in the case of a dictionary calls _pprint_dict [3], which ultimately calls _format_dict_items [4]. (which does not use compact or rather _compact) To me it also seems to be the most sensible behaviour, since dictionaries with their keys and values are different from most other sequences. In a dictionary the relation between keys and values is the most important one and reading a dictionary certainly is easier if each key value pair has a line of it's own. (Especially if the keys and values vary a lot in their lengths.) [1] https://github.com/python/cpython/blob/e42b705188271da108de42b55d9344642170aa2b/Lib/pprint.py#L138 [2] https://github.com/python/cpython/blob/e42b705188271da108de42b55d9344642170aa2b/Lib/pprint.py#L154 [3] https://github.com/python/cpython/blob/e42b705188271da108de42b55d9344642170aa2b/Lib/pprint.py#L180 [4] https://github.com/python/cpython/blob/e42b705188271da108de42b55d9344642170aa2b/Lib/pprint.py#L333 -- https://mail.python.org/mailman/listinfo/python-list
