Revert "BUG: Raise TypeError for mismatched signed/unsigned dtypes"

This reverts commit c75bec0.

Author: Aniketsy

pandas/core/arrays/interval.py

@@ -539,9 +539,13 @@ def from_arrays(
         # Check for mismatched signed/unsigned integer dtypes
         left_dtype = left.dtype
         right_dtype = right.dtype
-        if left_dtype != right_dtype:
+        if (
+            left_dtype.kind in "iu"
+            and right_dtype.kind in "iu"
+            and left_dtype.kind != right_dtype.kind
+        ):
             raise TypeError(
-                f"Left and right arrays must have matching dtypes. "
+                f"Left and right arrays must have matching signedness. "
                 f"Got {left_dtype} and {right_dtype}."
             )
 

pandas/tests/indexes/interval/test_interval.py

@@ -886,7 +886,7 @@ def test_from_arrays_mismatched_signedness_raises():
     # GH 55715
     left = np.array([0, 1, 2], dtype="int64")
     right = np.array([1, 2, 3], dtype="uint64")
-    with pytest.raises(TypeError, match="matching dtypes"):
+    with pytest.raises(TypeError, match="matching signedness"):
         IntervalIndex.from_arrays(left, right)