Python Mixed data structure

Question

I need some help creating an advanced data structure in Python. I haven't been using the language long, but finding it much harder than PHP when it comes to storing data.

At the end of the day, I want my data like this:

data[year][team] = { 'points' : 30, 'yards' : 800 }

Basically, I need to be able to retrieve, add, edit, and delete data in a json object by looking up via a year-team pair. Any ideas?

Just nest dictionaries, these can be converted to and from JSON easily with the module of the same name. — jonrsharpe
– jonrsharpe, Commented Sep 6, 2014 at 10:11

Gabriel Amram · Accepted Answer · 2014-09-06 10:13:22Z

1

The simplest approach in my opinion is just using a "dictionary of dictionaries".

data = {2014: {'Liverpool': {'points': 30, 'yards': 800}}}

this will allow you to use data[2014]['Liverpool'] to get the {'points': 30, 'yards': 800} dict.

Adding a year:

data.update({2015: ....})

Adding a team to a year:

data[2014].update({'ManU': ...})

Updating a year-team combo:

data[2014]['Liverpool'].update({'points': 33, 'yards': 820})

etc...

answered Sep 6, 2014 at 10:13

Gabriel Amram

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2 Comments

Tony D Over a year ago

Thanks Gabriel! And to delete would be: data[2014]['Liverpool'] = None ?

Gabriel Amram Over a year ago

A better way to do that would be data[2014]["Liverpool"].clear() but that would leave the "Liverpool" key in the dictionary, which might be annoying depending on your logic. Instead you could use data[2014].pop("Liverpool"), and that way the key is also removed from the 2014 dict.

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