Bug fix

rich/repr.py

@@ -71,7 +71,7 @@ def auto_rich_repr(self: Type[T]) -> Result:
                 signature = inspect.signature(self.__init__)
                 for name, param in signature.parameters.items():
                     if param.kind == param.POSITIONAL_ONLY:
-                        yield getattr(self, name)
+                        yield None, getattr(self, name)
                     elif param.kind in (
                         param.POSITIONAL_OR_KEYWORD,
                         param.KEYWORD_ONLY,

tests/test_pretty.py

@@ -9,6 +9,7 @@
 import attr
 import pytest
 
+import rich.repr
 from rich.console import Console
 from rich.measure import Measurement
 from rich.pretty import Node, Pretty, _ipy_display_hook, install, pprint, pretty_repr
@@ -739,6 +740,20 @@ def __rich_repr__(self):
     assert pretty_repr(Foo()) == "Foo()"
 
 
+def test_auto_tuple_positional_only_repr() -> None:
+    class ClassA:
+        pass
+
+    @rich.repr.auto
+    class PosOnlyTuple:
+        def __init__(self, pair, /):
+            self.pair = pair
+
+    result = pretty_repr(PosOnlyTuple((ClassA(), ClassA())))
+    assert result.startswith("PosOnlyTuple(")
+    assert "ClassA object" in result
+
+
 def test_dataclass_no_attribute() -> None:
     """Regression test for https://github.com/Textualize/rich/issues/3417"""
     from dataclasses import dataclass, field

tests/test_repr.py

@@ -110,6 +110,27 @@ def __init__(self, foo, /):
     assert repr(p) == "PosOnly(1)"
 
 
+def test_rich_repr_positional_only_tuple() -> None:
+    class ClassA:
+        pass
+
+    _locals = locals().copy()
+    exec(
+        """\
+@rich.repr.auto
+class PosOnlyTuple:
+    def __init__(self, pair, /):
+        self.pair = pair
+    """,
+        globals(),
+        _locals,
+    )
+    p = _locals["PosOnlyTuple"]((ClassA(), ClassA()))
+    result = repr(p)
+    assert result.startswith("PosOnlyTuple((")
+    assert "ClassA object" in result
+
+
 def test_rich_angular() -> None:
     assert (repr(Bar("hello"))) == "<Bar 'hello' 'hello' egg=1>"
     assert (repr(Bar("hello", bar=3))) == "<Bar 'hello' 'hello' bar=3 egg=1>"