{"library":"mergedeep","title":"mergedeep","description":"mergedeep is a Python library providing a deep merge function for dictionaries and other mutable mappings. It offers flexible strategies for handling conflicts, including replacement (default), additive merging for collections like lists, and type-safe replacement. The current version is 1.3.4, and the library is actively maintained with regular releases.","language":"python","status":"active","last_verified":"Tue May 12","install":{"commands":["pip install mergedeep"],"cli":null},"imports":["from mergedeep import merge","from mergedeep import merge, Strategy"],"auth":{"required":false,"env_vars":[]},"quickstart":{"code":"from mergedeep import merge, Strategy\n\na = {'keyA': 1, 'nested': {'x': 10, 'list_data': [1, 2]}}\nb = {'keyB': 2, 'nested': {'y': 20, 'list_data': [3, 4]}}\nc = {'keyC': 3, 'nested': {'x': 100, 'new_list': [5]}}\n\n# 1. Merge into a new dictionary (non-mutating)\nmerged_new = merge({}, a, b, c)\nprint(f\"Merged into new: {merged_new}\")\n# Expected: {'keyA': 1, 'nested': {'x': 100, 'list_data': [3, 4], 'y': 20, 'new_list': [5]}, 'keyB': 2, 'keyC': 3}\n\n# 2. Merge into an existing dictionary (mutating 'a')\nmerge(a, b, c)\nprint(f\"Merged into existing 'a': {a}\")\n# Expected: {'keyA': 1, 'nested': {'x': 100, 'list_data': [3, 4], 'y': 20, 'new_list': [5]}, 'keyB': 2, 'keyC': 3}\n\n# 3. Merging with an additive strategy for lists\ndst_additive = {'items': [1, 2], 'counts': {'a': 1}}\nsrc_additive = {'items': [3, 4], 'counts': {'b': 1}}\nmerged_additive = merge({}, dst_additive, src_additive, strategy=Strategy.ADDITIVE)\nprint(f\"Merged with ADDITIVE strategy: {merged_additive}\")\n# Expected: {'items': [1, 2, 3, 4], 'counts': {'a': 1, 'b': 1}}","lang":"python","description":"Demonstrates basic deep merging using the default REPLACE strategy and an example of the ADDITIVE strategy for collections. 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