# Dict The [[Python]] version of [[Hash Table]]. This [[ABC Container|container]] is [[Mutability|mutable]]. ## Immutable dict It is possible to create [[Immutability|immutable]] dicts using the [[Type]] [[MappingProxyType]]. ```python >>> types.MappingProxyType({"test": 42}) mappingproxy({'test': 42}) >>> _["ni"] = "knight" TypeError: 'mappingproxy' object does not support item assignment ``` --- Bibliography: - [Title - website.com](need bibliography)