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Handled non finite values in ax.pie - issue #29860 #29873

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Apr 24, 2025
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3 changes: 3 additions & 0 deletions lib/matplotlib/axes/_axes.py
Original file line number Diff line number Diff line change
Expand Up @@ -3303,6 +3303,9 @@ def pie(self, x, explode=None, labels=None, colors=None,
if np.any(x < 0):
raise ValueError("Wedge sizes 'x' must be non negative values")

if not np.all(np.isfinite(x)):
raise ValueError('Wedge sizes must be finite numbers')

sx = x.sum()

if normalize:
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8 changes: 8 additions & 0 deletions lib/matplotlib/tests/test_axes.py
Original file line number Diff line number Diff line change
Expand Up @@ -9720,3 +9720,11 @@ def test_bar_shape_mismatch():
)
with pytest.raises(ValueError, match=error_message):
plt.bar(x, height)


def test_pie_non_finite_values():
fig, ax = plt.subplots()
df = [5, float('nan'), float('inf')]
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Suggested change
df = [5, float('nan'), float('inf')]
values = [5, float('nan'), float('inf')]

Optional. df is typically used as variable name for dataframes, so it's slightly misleading here.


with pytest.raises(ValueError, match='Wedge sizes must be finite numbers'):
ax.pie(df, labels=['A', 'B', 'C'])
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