Method chains are an amazing programming pattern if you're building an API that needs to be expressive in how it changes data. In this series of video's we will make a pandas-like datacontainer for lists of dictionaries.
We'll load in the data via;
import json import pathlib poke_dict = json.loads(pathlib.Path("pokemon.json").read_text())
Next well define a new class called
Clumper. The idea is that this
class will allow us to more flexibly analyse the list of json objects for us.
class Clumper: def __init__(self, blob): self.blob = blob def keep(self, func): return [d for d in self.blob if func(d)]
You can see how it works by running.
Clumper(poke_dict).keep(lambda d: 'Grass' in d['type'])
Can you see a downside with this current approach though?
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