MNT: Prefer isinstance over type comparison

DimitriPapadopoulos · jorenham · DimitriPapadopoulos · commit dd6fc43e9c73 · 2025-05-12T22:37:52.000+02:00
Co-authored-by: Joren Hammudoglu &lt;jhammudoglu@gmail.com&gt;
diff --git a/numpy/_core/memmap.py b/numpy/_core/memmap.py
@@ -250,7 +250,7 @@ def __new__(subtype, filename, dtype=uint8, mode='r+', offset=0,
                 size = bytes // _dbytes
                 shape = (size,)
             else:
-                if type(shape) not in (tuple, list):
+                if not isinstance(shape, (tuple, list)):
                     try:
                         shape = [operator.index(shape)]
                     except TypeError:
diff --git a/numpy/lib/_shape_base_impl.py b/numpy/lib/_shape_base_impl.py
@@ -589,7 +589,7 @@ def expand_dims(a, axis):
     else:
         a = asanyarray(a)
 
-    if type(axis) not in (tuple, list):
+    if not isinstance(axis, (tuple, list)):
         axis = (axis,)
 
     out_ndim = len(axis) + a.ndim
