From 43fca5dad717154e8cb46ce1379c6ef0be034fee Mon Sep 17 00:00:00 2001
From: Ohad Ravid <ohad.rv@gmail.com>
Date: Sun, 27 Jun 2021 14:36:12 +0300
Subject: [PATCH] Make `ToPyObject` impl for `HashSet` accept non-default
hashers.
---
CHANGELOG.md | 1 +
src/types/set.rs | 3 ++-
2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 56da0781c15..bfabcc32780 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -62,6 +62,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
- Use `METH_FASTCALL` argument passing convention, when possible, to improve `#[pyfunction]` and method performance.
[#1619](https://github.com/PyO3/pyo3/pull/1619), [#1660](https://github.com/PyO3/pyo3/pull/1660)
- Make the `Py_tracefunc` parameter of the `PyEval_SetProfile`/`PyEval_SetTrace` functions optional. [#1692](https://github.com/PyO3/pyo3/pull/1692)
+- Make `ToPyObject` impl for `HashSet` accept non-default hashers. [#1702](https://github.com/PyO3/pyo3/pull/1702)
### Removed
diff --git a/src/types/set.rs b/src/types/set.rs
index dc5246419d6..6b664526343 100644
--- a/src/types/set.rs
+++ b/src/types/set.rs
@@ -183,9 +183,10 @@ impl<'a> std::iter::IntoIterator for &'a PySet {
}
}
-impl<T> ToPyObject for collections::HashSet<T>
+impl<T, S> ToPyObject for collections::HashSet<T, S>
where
T: hash::Hash + Eq + ToPyObject,
+ S: hash::BuildHasher + Default,
{
fn to_object(&self, py: Python) -> PyObject {
let set = PySet::new::<T>(py, &[]).expect("Failed to construct empty set");