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Making ordered set reversible #395

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Merged
merged 2 commits into from
Nov 3, 2025
Merged

Making ordered set reversible #395

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002e751
made ordered set reversible
yfukai Nov 3, 2025
9723412
style(pre-commit.ci): auto fixes [...]
pre-commit-ci[bot] Nov 3, 2025
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4 changes: 4 additions & 0 deletions src/psygnal/containers/_evented_set.py
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Original file line number Diff line number Diff line change
Expand Up @@ -228,6 +228,10 @@ def __repr__(self) -> str:
inner = ", ".join(str(x) for x in self._data)
return f"{self.__class__.__name__}(({inner}))"

def __reversed__(self) -> Iterator[_T]:
"""Implement reversed(self)."""
return reversed(self._data.keys())


class SetEvents(SignalGroup):
"""Events available on [EventedSet][psygnal.containers.EventedSet].
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10 changes: 10 additions & 0 deletions tests/containers/test_evented_set.py
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Expand Up @@ -121,6 +121,16 @@ def test_ordering():
assert tuple(os_tup) == (24, 16, 4, 5, 6, 8)


def test_iterator():
tup = (24, 16, 8, 4, 5, 6)
os_tup = OrderedSet(tup)
es_tup = EventedOrderedSet(tup)
assert tuple(iter(os_tup)) == tup
assert tuple(reversed(os_tup)) == tuple(reversed(tup))
assert tuple(iter(es_tup)) == tup
assert tuple(reversed(es_tup)) == tuple(reversed(tup))


def test_copy(test_set):
from copy import copy

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