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DOC: clarify rc_context resets all rcParams changes #24354

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Nov 3, 2022
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DOC: clarify rc_context resets all rcParams changes #24354

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10 changes: 10 additions & 0 deletions lib/matplotlib/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1080,6 +1080,9 @@ def rc_context(rc=None, fname=None):

The :rc:`backend` will not be reset by the context manager.

rcParams changed both through the context manager invocation and
in the body of the context will be reset on context exit.

Parameters
----------
rc : dict
Expand Down Expand Up @@ -1107,6 +1110,13 @@ def rc_context(rc=None, fname=None):
with mpl.rc_context(fname='print.rc'):
plt.plot(x, y) # uses 'print.rc'

Setting in the context body::

with mpl.rc_context():
# will be reset
mpl.rcParams['lines.linewidth'] = 5
plt.plot(x, y)

"""
orig = dict(rcParams.copy())
del orig['backend']
Expand Down