a text serialization format

JSON, by default, can only represent a subset of the Python built-in types, and no custom classes

Unlike pickle, deserializing untrusted JSON does not in itself create an arbitrary code execution vulnerability

import json

l = list(range(10))

# serialize to file
f = open('temp.json', 'w')
json.dump(l, f)
f.close()
		

# deserialize from file
f = open('temp.json', 'r')
print(json.load(f))
f.close()
        

# serialize to string
s = json.dumps(l)

s = json.dumps([1, 2, 3, {'4': 5, '6': 7}], separators=(',', ':')) # compact

s = json.dumps({'4': 5, '6': 7}, sort_keys=True, indent=4) # pretty

# deserialize from string
json.loads(s)
		

# encode
encoder = json.JSONEncoder()
s = encoder.encode(l)

# decode
decoder = json.JSONDecoder()
decoder.decode(s)
		

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