Python JSON to Custom Class: object_hook Deserialization
Convert JSON to custom Python objects with object_hook, nested data, a JSONDecoder subclass, object_pairs_hook for duplicate keys and input validation.
Python JSON tutorials on reading and writing JSON files, appending to JSON, and converting JSON to and from custom classes with the json module. See the Python tutorial index for all topics.
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Python Custom Class to JSON: Fix Not JSON Serializable
Fix TypeError Object is not JSON serializable in Python with a default function, a JSONEncoder subclass, dataclasses.asdict() or __dict__, with dates.
Python Append to JSON File: Lists, Dicts and JSON Lines
Append data to a JSON file in Python by reading, updating and rewriting it. Fix the dict append AttributeError, write safely, and use JSON Lines.
Python Write JSON to File: json.dump() with Examples
Write JSON to a file in Python with json.dump(). Learn indent, sort_keys, ensure_ascii for non-ASCII text, the conversion rules and default for dates.
Python Read JSON File: json.load() Examples and Errors
Read a JSON file in Python with json.load(), access nested values, compare load() and loads(), and handle FileNotFoundError, JSONDecodeError and JSONL.