[query] frozendict #10105
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[query] frozendict #10105
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tpoterba
previously requested changes
Feb 25, 2021
danking
requested changes
Feb 25, 2021
| U = TypeVar("U") | ||
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| class frozendict(Mapping): |
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I think Mapping can take type arguments Mapping[T, U].
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typing.Dict supports this, but typing.Mapping doesn't seem to, unless I'm misreading. I'm new to the python type annotations stuff.
danking
previously requested changes
Feb 25, 2021
| return len(self.d) | ||
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| def __iter__(self): | ||
| return iter(self.d) |
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Can you add a repr:
def __repr__(self):
return f'frozendict({self.d!r})'
| An object representing an immutable dictionary. | ||
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| >>> my_frozen_dict = hl.utils.frozendict({1:2, 7:5}) | ||
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Can you give an example of converting a frozendict back to a normal dict?
dict(frozendict({'a': 1, 'b': 2}))
…'t have a common setlike supertype
tpoterba
approved these changes
Mar 1, 2021
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CHANGELOG: Evaluating hail expressions in python will now return
frozendict, an immutable dictionary type. Sets will return python'sfrozenset.This is necessary because hail supports hashable dicts, but python does not. Same with sets.