Remove warning for underscore artist names in legend() call, as it's deprecated #30464

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skjerns wants to merge 1 commit into matplotlib:main from skjerns:patch-1

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Remove warning for underscore artist names in legend() call, as it's deprecated #30464

skjerns wants to merge 1 commit into matplotlib:main from skjerns:patch-1

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skjerns

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@skjerns skjerns commented Aug 25, 2025

Hiding certain artists names/handles with an underscore has been deprecated.

This removes the warning that is still in the code.

@skjerns


 remove warning for underscore ignoring of legends, as it's deprecated

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@github-actions github-actions bot added the topic: legend label

Aug 25, 2025

@tacaswell

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tacaswell commented Aug 25, 2025

This warning is in the fully implicit code path and the filtering is not removed:

import matplotlib.pyplot as plt
fig, (ax1, ax2) = plt.subplots(1, 2, layout='constrained'q)
ax1.plot(range(5), label='_hidden')
ax1.plot(range(5)[::-1], label='shown')
ax1.legend()
ax1.set_title('implict legend')
ln1, = ax2.plot(range(5), label='_hidden')
ln2, = ax2.plot(range(5)[::-1], label='shown')
ax2.legend(handles=[ln1, ln2])
ax2.set_title('explicit legend')
plt.show()