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Backport PR #20225 on branch v3.4.x (FIX: correctly handle ax.legend(..., legendcolor='none')) #20234

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Merged
merged 1 commit into from
May 15, 2021
Merged

Backport PR #20225 on branch v3.4.x (FIX: correctly handle ax.legend(..., legendcolor='none')) #20234

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3 changes: 3 additions & 0 deletions lib/matplotlib/legend.py
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Original file line number Diff line number Diff line change
Expand Up @@ -534,6 +534,9 @@ def __init__(self, parent, handles, labels,
break
except AttributeError:
pass
elif isinstance(labelcolor, str) and labelcolor == 'none':
for text in self.texts:
text.set_color(labelcolor)
elif np.iterable(labelcolor):
for text, color in zip(self.texts,
itertools.cycle(
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7 changes: 4 additions & 3 deletions lib/matplotlib/tests/test_legend.py
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Original file line number Diff line number Diff line change
Expand Up @@ -552,16 +552,17 @@ def test_legend_title_fontsize():
assert leg.get_title().get_fontsize() == 22


def test_legend_labelcolor_single():
@pytest.mark.parametrize('color', ('red', 'none', (.5, .5, .5)))
def test_legend_labelcolor_single(color):
# test labelcolor for a single color
fig, ax = plt.subplots()
ax.plot(np.arange(10), np.arange(10)*1, label='#1')
ax.plot(np.arange(10), np.arange(10)*2, label='#2')
ax.plot(np.arange(10), np.arange(10)*3, label='#3')

leg = ax.legend(labelcolor='red')
leg = ax.legend(labelcolor=color)
for text in leg.get_texts():
assert mpl.colors.same_color(text.get_color(), 'red')
assert mpl.colors.same_color(text.get_color(), color)


def test_legend_labelcolor_list():
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