diff --git a/galleries/examples/misc/packed_bubbles.py b/galleries/examples/misc/packed_bubbles.py
index 61cb903313a5..b1f9448e4c81 100644
--- a/galleries/examples/misc/packed_bubbles.py
+++ b/galleries/examples/misc/packed_bubbles.py
@@ -76,8 +76,7 @@ def check_collisions(self, bubble, bubbles):
 
     def collides_with(self, bubble, bubbles):
         distance = self.outline_distance(bubble, bubbles)
-        idx_min = np.argmin(distance)
-        return idx_min if type(idx_min) == np.ndarray else [idx_min]
+        return np.argmin(distance, keepdims=True)
 
     def collapse(self, n_iterations=50):
         """
diff --git a/lib/matplotlib/dviread.py b/lib/matplotlib/dviread.py
index 853a314ba256..c00d05de0723 100644
--- a/lib/matplotlib/dviread.py
+++ b/lib/matplotlib/dviread.py
@@ -622,7 +622,7 @@ def __init__(self, scale, tfm, texname, vf):
                        for char in range(nchars)]
 
     def __eq__(self, other):
-        return (type(self) == type(other)
+        return (type(self) is type(other)
                 and self.texname == other.texname and self.size == other.size)
 
     def __ne__(self, other):
diff --git a/lib/matplotlib/font_manager.py b/lib/matplotlib/font_manager.py
index e9ac9369b86f..a4bab8d973e0 100644
--- a/lib/matplotlib/font_manager.py
+++ b/lib/matplotlib/font_manager.py
@@ -853,7 +853,7 @@ def set_fontconfig_pattern(self, pattern):
         pattern syntax for use here.
         """
         for key, val in parse_fontconfig_pattern(pattern).items():
-            if type(val) == list:
+            if type(val) is list:
                 getattr(self, "set_" + key)(val[0])
             else:
                 getattr(self, "set_" + key)(val)
diff --git a/lib/matplotlib/tests/test_axes.py b/lib/matplotlib/tests/test_axes.py
index 7e7b8a26d7de..0af5f9c9dd93 100644
--- a/lib/matplotlib/tests/test_axes.py
+++ b/lib/matplotlib/tests/test_axes.py
@@ -2949,12 +2949,12 @@ def _as_mpl_axes(self):
 
     # testing axes creation with plt.axes
     ax = plt.axes((0, 0, 1, 1), projection=prj)
-    assert type(ax) == PolarAxes
+    assert type(ax) is PolarAxes
     plt.close()
 
     # testing axes creation with subplot
     ax = plt.subplot(121, projection=prj)
-    assert type(ax) == PolarAxes
+    assert type(ax) is PolarAxes
     plt.close()
 
 
diff --git a/lib/matplotlib/tests/test_cbook.py b/lib/matplotlib/tests/test_cbook.py
index 067b732b18a0..1f4f96324e9e 100644
--- a/lib/matplotlib/tests/test_cbook.py
+++ b/lib/matplotlib/tests/test_cbook.py
@@ -226,7 +226,7 @@ def test_callback_complete(self, pickle):
 
         # test that we can add a callback
         cid1 = self.connect(self.signal, mini_me.dummy, pickle)
-        assert type(cid1) == int
+        assert type(cid1) is int
         self.is_not_empty()
 
         # test that we don't add a second callback
@@ -251,7 +251,7 @@ def test_callback_disconnect(self, pickle):
 
         # test that we can add a callback
         cid1 = self.connect(self.signal, mini_me.dummy, pickle)
-        assert type(cid1) == int
+        assert type(cid1) is int
         self.is_not_empty()
 
         self.disconnect(cid1)
@@ -269,7 +269,7 @@ def test_callback_wrong_disconnect(self, pickle):
 
         # test that we can add a callback
         cid1 = self.connect(self.signal, mini_me.dummy, pickle)
-        assert type(cid1) == int
+        assert type(cid1) is int
         self.is_not_empty()
 
         self.disconnect("foo")
diff --git a/lib/matplotlib/tests/test_image.py b/lib/matplotlib/tests/test_image.py
index 626f33871f3c..a6b37bfb3102 100644
--- a/lib/matplotlib/tests/test_image.py
+++ b/lib/matplotlib/tests/test_image.py
@@ -1463,7 +1463,7 @@ def test_str_norms(fig_test, fig_ref):
     axrs[3].imshow(t, norm=colors.SymLogNorm(linthresh=2, vmin=.3, vmax=.7))
     axrs[4].imshow(t, norm="logit", clim=(.3, .7))
 
-    assert type(axts[0].images[0].norm) == colors.LogNorm  # Exactly that class
+    assert type(axts[0].images[0].norm) is colors.LogNorm  # Exactly that class
     with pytest.raises(ValueError):
         axts[0].imshow(t, norm="foobar")
 
diff --git a/lib/matplotlib/tests/test_scale.py b/lib/matplotlib/tests/test_scale.py
index 7f1130560581..727397367762 100644
--- a/lib/matplotlib/tests/test_scale.py
+++ b/lib/matplotlib/tests/test_scale.py
@@ -37,22 +37,22 @@ def test_symlog_mask_nan():
     x = np.arange(-1.5, 5, 0.5)
     out = slti.transform_non_affine(slt.transform_non_affine(x))
     assert_allclose(out, x)
-    assert type(out) == type(x)
+    assert type(out) is type(x)
 
     x[4] = np.nan
     out = slti.transform_non_affine(slt.transform_non_affine(x))
     assert_allclose(out, x)
-    assert type(out) == type(x)
+    assert type(out) is type(x)
 
     x = np.ma.array(x)
     out = slti.transform_non_affine(slt.transform_non_affine(x))
     assert_allclose(out, x)
-    assert type(out) == type(x)
+    assert type(out) is type(x)
 
     x[3] = np.ma.masked
     out = slti.transform_non_affine(slt.transform_non_affine(x))
     assert_allclose(out, x)
-    assert type(out) == type(x)
+    assert type(out) is type(x)
 
 
 @image_comparison(['logit_scales.png'], remove_text=True)