A "Frozen" Dictionary for Python
3 days ago
- #Concurrency
- #Python
- #Programming
- Python's dictionaries are mutable, posing challenges in concurrent code.
- PEP 814 proposes adding a 'frozendict' type to Python for immutable dictionaries.
- frozendict would be safe by design, preventing unintended modifications.
- frozendict is not a subclass of dict but of the base object type.
- Keys in frozendict must be immutable, but values can be mutable.
- frozendict supports operations like union and iteration similar to dict.
- Discussion around PEP 814 includes optimizations like O(1) conversion from dict to frozendict.
- The PEP has been submitted to Python's steering council for approval.