Policy: group | related items, sort by | descending order of (nontriviality, interestingness, and usefulness etc.,)

• convert dict of dicts to list of dicts
• Convert a dictionary of dataframes to a big dataframe

In [1]:
d = {'sun': 1,
     'mon': 2,
     'tue': 3}
d
Out[1]:
{'sun': 1, 'mon': 2, 'tue': 3}