json-merge-patch

import json import json_merge_patch document = {"a": 1, "b": 2, "c": {"d": 4}} patch = {"a": 2, "c": {"e": 5}, "f": None} # Applying a merge patch # 'f': None in patch implies deletion of 'f' if it existed, otherwise ignored # 'c': {'e': 5} replaces the entire 'c' object result = json_merge_patch.merge(document, patch) print(f"Merged result: {json.dumps(result, indent=2)}") # Expected output: {'a': 2, 'b': 2, 'c': {'e': 5}} original = {"name": "Alice", "details": {"age": 30, "city": "NY"}, "tags": ["A", "B"]} target = {"name": "Bob", "details": {"age": 31}, "email": "bob@example.com", "tags": ["C"]} # Creating a merge patch # 'name': 'Bob' replaces 'Alice' # 'details': {'age': 31} replaces the entire 'details' object (city is removed) # 'email': 'bob@example.com' is added # 'tags': ['C'] replaces the entire 'tags' array patch_doc = json_merge_patch.create_patch(original, target) print(f"Generated patch: {json.dumps(patch_doc, indent=2)}") # Expected output: {'name': 'Bob', 'details': {'age': 31}, 'email': 'bob@example.com', 'tags': ['C']}