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Fixes pyplot xticks() and yticks() by allowing setting only the labels #15788

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5 changes: 5 additions & 0 deletions doc/users/next_whats_new/2019-11-29-pyplot-ticks-labels.rst
Original file line number Diff line number Diff line change
@@ -0,0 +1,5 @@
ticks' labels can now be set without passing ``ticks`` in pyplot
----------------------------------------------------------------

``pyplot.xticks()`` and ``pyplot.yticks()`` can now be used to set ticks'
labels without requiring to pass the ``ticks`` parameter.
18 changes: 10 additions & 8 deletions lib/matplotlib/pyplot.py
Original file line number Diff line number Diff line change
Expand Up @@ -1428,15 +1428,16 @@ def xticks(ticks=None, labels=None, **kwargs):
"""
ax = gca()

if ticks is None and labels is None:
if ticks is None:
locs = ax.get_xticks()
labels = ax.get_xticklabels()
elif labels is None:
else:
locs = ax.set_xticks(ticks)

if labels is None:
labels = ax.get_xticklabels()
else:
locs = ax.set_xticks(ticks)
labels = ax.set_xticklabels(labels, **kwargs)

for l in labels:
l.update(kwargs)

Expand Down Expand Up @@ -1503,15 +1504,16 @@ def yticks(ticks=None, labels=None, **kwargs):
"""
ax = gca()

if ticks is None and labels is None:
if ticks is None:
locs = ax.get_yticks()
labels = ax.get_yticklabels()
elif labels is None:
else:
locs = ax.set_yticks(ticks)

if labels is None:
labels = ax.get_yticklabels()
else:
locs = ax.set_yticks(ticks)
labels = ax.set_yticklabels(labels, **kwargs)

for l in labels:
l.update(kwargs)

Expand Down