Any new 3.6 implementations are expected to have ordered dicts. Implementations that claim to be 3.6 compatible, of which there are Time of this writing, it’s also true for all other Python This is a backport to Python 3.6, it raises an interesting question:ĭoes that guarantee apply to 3.6? For CPython 3.6 it does. This is true in the language spec for Python 3.7 and greater. This backport assumes that dict objects retain their insertion order. Some additional tools can be found in dataclass_tools.py, included in quantity_on_hand item = InventoryItem ( 'hammers', 10.49, 12 ) print ( item. ![]() ![]() ![]() Installation pip install dataclasses Example Usage from dataclasses import dataclass class InventoryItem : name : str unit_price : float quantity_on_hand : int = 0 def total_cost ( self ) -> float : return self. (it’s where the original dataclasses discussions took place) and forĭiscussion of the actual backport to Python 3.6. Because dataclasses will be included in Python 3.7,Īny discussion of dataclass features should occur on the python-devĪt this point this repo should only be used for historical purposes This is an implementation of PEP 557, Data Classes.
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