Fix Imports and Added Test

pandas/core/computation/ops.py

@@ -19,6 +19,7 @@
 
 from pandas.core.dtypes.common import (
     is_list_like,
+    is_numeric_dtype,
     is_scalar,
 )
 
@@ -508,12 +509,6 @@ def _disallow_scalar_only_bool_ops(self) -> None:
             raise NotImplementedError("cannot evaluate scalar only bool ops")
 
 
-def isnumeric(dtype) -> bool:
-    return getattr(dtype, "_is_numeric", False) or issubclass(
-        np.dtype(dtype).type, np.number
-    )
-
-
 class Div(BinOp):
     """
     Div operator to special case casting.
@@ -527,7 +522,9 @@ class Div(BinOp):
     def __init__(self, lhs, rhs) -> None:
         super().__init__("/", lhs, rhs)
 
-        if not isnumeric(lhs.return_type) or not isnumeric(rhs.return_type):
+        if not is_numeric_dtype(lhs.return_type) or not is_numeric_dtype(
+            rhs.return_type
+        ):
             raise TypeError(
                 f"unsupported operand type(s) for {self.op}: "
                 f"'{lhs.return_type}' and '{rhs.return_type}'"

pandas/tests/extension/test_datetime.py

@@ -88,13 +88,6 @@ def cmp(a, b):
     return cmp
 
 
-@pytest.fixture
-def isnumeric(dtype):
-    return getattr(dtype, "is_numeric", False) or issubclass(
-        np.dtype(dtype).type, np.number
-    )
-
-
 # ----------------------------------------------------------------------------
 class TestDatetimeArray(base.ExtensionTests):
     def _get_expected_exception(self, op_name, obj, other):

pandas/tests/frame/test_query_eval.py

@@ -202,6 +202,13 @@ def test_eval_simple(self, engine, parser):
         expected = df["a"]
         tm.assert_series_equal(expected, res)
 
+    def test_extension_array_eval():
+        # GH#58748
+        df = DataFrame({"a": pd.array([1, 2, 3]), "b": pd.array([4, 5, 6])})
+        result = df.eval("a / b")
+        expected = Series([0.25, 0.40, 0.50])
+        tm.assert_series_equal(result, expected)
+
 
 class TestDataFrameQueryWithMultiIndex:
     def test_query_with_named_multiindex(self, parser, engine):