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import json
Enable json functions. The json module is standard available (no installation needed)
Return <jsonstring> as dict.
Read a jsonstring from the file opened on <fh> and return it as dict.
import json
with open(filename) as fh:
    data = json.load(fh)
Read a jsonstring from an url in to a dictionary.
import json
import requests

response = json.loads(requests.get(url).text)

for key in response:

Below can be used on datatypes like lists and tuples too, not on sets.

json.dumps(dict, indent=4)
Convert a dict into a json string nicely formatted. Indent each level with 4 spaces.
json.dump(dict, fh, indent=4)
Dumps to the file opened on filehandle fh.