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Thank you for this blogpost, it is exactly what I was looking for! Well, it would be nice to have a library for searching complex dict/list structures, but so far I didn’t find any…įor future readers / concerning Nils’ post: “The nice thing about standards is that you have so many to choose from.” – Andrew S.

Nice if that’s your use case, but aren’t you just beginning to reinvent XPath for JSON? Oh wait, apparently there is already JSONQuery, JSONPath, JSONselect, JSPath, Json Pointer, Jsel… Now you can do this: for item in animals:Įmail (not required) Website (not required) Comment Submit Unfortunately, this is not possible in vanilla Python, but with a really small helper class you can easily make this happen: class DictQuery(dict): Wouldn’t it be awesome if you could simply do this? for item in animals: You could do something like this: for item in animals:īut with deeply nested structures (i counted seven levels in the Wikidata API) this gets unwieldy pretty fast. You could nest the get statements for item in animals:īut leads to an error because the animal key is lacking in the third item. The second argument to get is a default value that will be used if the key is not available: bunnyĮxcellent! However, this leads to problems when having a nested structure: animals = [ Print item.get("animal", "no animal available") You could use the handy get method: for item in animals: If you would try to directly access the animal property in a fashion like this: for item in animals:īecause the animal key is missing in the second item in the list.

Let’s say you’re using some parsed JSON, for example from the Wikidata API. The structure is pretty predictable, but not at all times: some of the keys in the dictionary might not be available all the time.Ĭonsider a structure like this: animals = [ Python is a lovely language for data processing, but it can get a little verbose when dealing with large nested dictionaries. If you want to easily process CSV and JSON files with Python check out dataknead, my data parsing library.