diff --git a/lib/matplotlib/tests/test_axes.py b/lib/matplotlib/tests/test_axes.py
index 24d5f6768b64..6c970cdbeb3c 100644
--- a/lib/matplotlib/tests/test_axes.py
+++ b/lib/matplotlib/tests/test_axes.py
@@ -1479,7 +1479,7 @@ def test_pcolorargs():
ax.pcolormesh(x, y, Z[:-1, :-1], shading="gouraud")
with pytest.raises(TypeError):
ax.pcolormesh(X, Y, Z[:-1, :-1], shading="gouraud")
- x[0] = np.NaN
+ x[0] = np.nan
with pytest.raises(ValueError):
ax.pcolormesh(x, y, Z[:-1, :-1])
with np.errstate(invalid='ignore'):
@@ -7411,7 +7411,7 @@ def test_limits_after_scroll_zoom():
def test_gettightbbox_ignore_nan():
fig, ax = plt.subplots()
remove_ticks_and_titles(fig)
- ax.text(np.NaN, 1, 'Boo')
+ ax.text(np.nan, 1, 'Boo')
renderer = fig.canvas.get_renderer()
np.testing.assert_allclose(ax.get_tightbbox(renderer).width, 496)
@@ -8591,7 +8591,7 @@ def test_bar_leading_nan():
barheights = np.array([0.5, 1.5, 2.0])
barstarts = np.array([0.77]*3)
- barx[0] = np.NaN
+ barx[0] = np.nan
fig, ax = plt.subplots()
diff --git a/lib/matplotlib/tests/test_colors.py b/lib/matplotlib/tests/test_colors.py
index 32af4a469f1c..e8fc9baa1479 100644
--- a/lib/matplotlib/tests/test_colors.py
+++ b/lib/matplotlib/tests/test_colors.py
@@ -339,7 +339,7 @@ def test_BoundaryNorm():
# Masked arrays
boundaries = [0, 1.1, 2.2]
- vals = np.ma.masked_invalid([-1., np.NaN, 0, 1.4, 9])
+ vals = np.ma.masked_invalid([-1., np.nan, 0, 1.4, 9])
# Without interpolation
ncolors = len(boundaries) - 1
@@ -353,9 +353,9 @@ def test_BoundaryNorm():
assert_array_equal(bn(vals), expected)
# Non-trivial masked arrays
- vals = np.ma.masked_invalid([np.Inf, np.NaN])
+ vals = np.ma.masked_invalid([np.inf, np.nan])
assert np.all(bn(vals).mask)
- vals = np.ma.masked_invalid([np.Inf])
+ vals = np.ma.masked_invalid([np.inf])
assert np.all(bn(vals).mask)
# Incompatible extend and clip
diff --git a/lib/matplotlib/tests/test_image.py b/lib/matplotlib/tests/test_image.py
index a6b37bfb3102..aeeebd136b65 100644
--- a/lib/matplotlib/tests/test_image.py
+++ b/lib/matplotlib/tests/test_image.py
@@ -1376,7 +1376,7 @@ def test_rgba_antialias():
aa[:, int(N/2):] = a[:, int(N/2):]
# set some over/unders and NaNs
- aa[20:50, 20:50] = np.NaN
+ aa[20:50, 20:50] = np.nan
aa[70:90, 70:90] = 1e6
aa[70:90, 20:30] = -1e6
aa[70:90, 195:215] = 1e6
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