old numpy

Author: MarcoGorelli

tests/indexes/test_indexes.py

@@ -2,6 +2,7 @@
 
 from collections.abc import Hashable
 import datetime as dt
+import sys
 from typing import (
     Any,
     cast,
@@ -1675,10 +1676,13 @@ def test_index_view() -> None:
     ind = pd.Index([1, 2])
     check(assert_type(ind.view("int64"), ArrayLike), np_1darray_int64)
     check(assert_type(ind.view(), "pd.Index[int]"), pd.Index)
-    # mypy and pyright differ here in what they report:
-    # - mypy: ndarray[Any, Any]"
-    # - pyright: ndarray[tuple[Any, ...], dtype[Any]]
-    check(assert_type(ind.view(np.ndarray), np_ndarray), np.ndarray)  # type: ignore[assert-type]
+    # on NumPy<1.23, we get:
+    # error: "assert_type" mismatch: expected "ndarray[tuple[Any, ...], dtype[Any]]" but received "ndarray[Unknown, Unknown]" (reportAssertTypeFailure)
+    if sys.version_info >= (3, 11):
+        # mypy and pyright differ here in what they report:
+        # - mypy: ndarray[Any, Any]"
+        # - pyright: ndarray[tuple[Any, ...], dtype[Any]]
+        check(assert_type(ind.view(np.ndarray), np_ndarray), np.ndarray)  # type: ignore[assert-type]
 
     class MyArray(np.ndarray): ...