Support pandas dataframes about pyjson_tricks

[mverleg]

Actually let's keep it open, there may be bugs, or more details that need serialization. But there is an experimental version that seems to work.

[mverleg]

Needs documentation

[Jenselme]

Actually let's keep it open, there may be bugs,

I think I found one. I have pandas installed but no pandas dataframes in a serialized JSON with json-tricks. When I deserialize my JSON I get errors like:

~/Seafile/Exchange/tests-serialization/json_tricks/decoders.py in pandas_hook(dct)
    179 
--> 180         if '__pandas_dataframe__' in dct or '__pandas_series__' in dct:
    181                 # todo: this is experimental
    182                 if not getattr(pandas_hook, '_warned', False):

TypeError: argument of type 'ColorEnum' is not iterable

I think that this comes from the fact that unlike in other decoders, you don't check whether dct is a dict before trying to process it.

[mverleg]

That sounds like a likely explanation yes! I'll have a look

[mverleg]

I think the problem was indeed that there was no check, which only comes to light when using a custom hook (because otherwise pandas is the first hook and always gets dicts). Good find!

[Jenselme]

Thanks for the correction, it now works as expected! Since I don't use pandas, I can't test the serialization/deserialiation part.

[mverleg]

Seems things are working, I'm going to close.