internal. pprinter for iterables. you should probably use pprint_thing()
    rather then calling this directly.

def _pprint_dict(seq, _nest_lvl=0, max_seq_items=None, **kwds):
    """
    internal. pprinter for iterables. you should probably use pprint_thing()
    rather then calling this directly.
    """
    fmt = "{{{things}}}"
    pairs = []

    pfmt = "{key}: {val}"

    if max_seq_items is False:
        nitems = len(seq)
    else:
        nitems = max_seq_items or get_option("max_seq_items") or len(seq)

    for k, v in list(seq.items())[:nitems]:
        pairs.append(
            pfmt.format(
                key=pprint_thing(k, _nest_lvl + 1,
                                 max_seq_items=max_seq_items, **kwds),
                val=pprint_thing(v, _nest_lvl + 1,
                                 max_seq_items=max_seq_items, **kwds)))

    if nitems < len(seq):
        return fmt.format(things=", ".join(pairs) + ", ...")
    else:
        return fmt.format(things=", ".join(pairs))