Python - What Is json.JSONEncoder Class

What Is json.JSONEncoder Class

Q

What Is json.JSONEncoder Class?

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A

json.JSONEncoder class is the underlying class that supports json.dumps() functions.

The following Python example shows you how to use json.JSONEncoder class to perform the same JSON encoding job as json.dumps function:

>>> import json
>>> l = ['foo', {'bar': ('baz', None, 1.0, {"c": 0, "b": 0, "a": 0})}]

>>> # Encoding with json.dumps() function
>>> j = json.dumps(l, indent=None, separators=(',', ':'), sort_keys=True)
>>> print(j)
["foo",{"bar":["baz",null,1.0,{"a":0,"b":0,"c":0}]}]

>>> # Encoding with json.JSONEncoder class
>>> encoder = json.JSONEncoder(indent=None, separators=(',', ':'), 
   sort_keys=True)
>>> j = encoder.encode(l)
>>> print(j)
["foo",{"bar":["baz",null,1.0,{"a":0,"b":0,"c":0}]}]

⇒ Extending json.JSONEncoder Class

⇐ Dumping JSON Output to File

⇑ 'json' Module - JSON Encoder and Decoder

⇑⇑ Python Tutorials

2018-10-08, 132👍, 0💬

What Is json.JSONEncoder Class
What Is json.JSONEncoder Class? json.JSONEncoder class is the underlying class that supports json.dumps() functions. The following Python example shows you how to use json.JSONEncoder class to perform the same JSON encoding job as json.dumps function: >>> import json >&am... 2018-10-08, 133👍, 0💬

Extending json.JSONEncoder Class
How to extend json.JSONEncoder class? I want to encode other Python data types to JSON. If you encode your own data types to JSON strings, you need to extend the json.JSONEncoder class and override the default() function. The following Python example shows you how to extend json.JSONEncoder class to... 2018-10-08, 131👍, 0💬

Dumping JSON Output to File
How to dump (or encode, serialize) a Python object into file or an output stream as a JSON string using json.dump()? json.dump(o,fp,...) function performs the same job as json.dumps(o,...) except that it directs the JSON string to the output stream of a given file pointer. Here is a Python example t... 2018-10-08, 123👍, 0💬

Generating JSON Strings in Pretty Format
How to generate JSON strings in pretty format using json.dumps()? You can control the JSON output string format with "indent", "separators" and "sort_keys" arguments of the json.dumps() function: Here is a Python example that generates a pretty formatted JSON string with property keys sorted: &g... 2018-10-08, 122👍, 0💬

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