diff --git a/doc/api/matplotlib_configuration_api.rst b/doc/api/matplotlib_configuration_api.rst
index 9f0ad3678ffb..26ce3ac57edf 100644
--- a/doc/api/matplotlib_configuration_api.rst
+++ b/doc/api/matplotlib_configuration_api.rst
@@ -12,21 +12,15 @@ The top level :mod:`matplotlib` module
An instance of :class:`RcParams` for handling default matplotlib values.
-.. autofunction:: rc
-
-.. autofunction::rcdefaults
-
-.. autofunction::rc_file
+.. autofunction:: rc_context
-.. autofunction::rc_context
-
-.. autofunction:: matplotlib_fname
+.. autofunction:: rc
-.. autofunction::rc_file_defaults
+.. autofunction:: rc_file
-.. autofunction::interactive
+.. autofunction:: rcdefaults
-.. autofunction::is_interactive
+.. autofunction:: rc_file_defaults
.. autoclass:: RcParams
@@ -34,4 +28,8 @@ The top level :mod:`matplotlib` module
.. autofunction:: rc_params_from_file
-.. autoclass:: rc_context
+.. autofunction:: matplotlib_fname
+
+.. autofunction:: interactive
+
+.. autofunction:: is_interactive
diff --git a/lib/matplotlib/__init__.py b/lib/matplotlib/__init__.py
index 187501efcefb..daf8e315f7cf 100644
--- a/lib/matplotlib/__init__.py
+++ b/lib/matplotlib/__init__.py
@@ -103,21 +103,22 @@
unicode_literals)
import six
-import sys
-import distutils.version
-from itertools import chain
from collections import MutableMapping
+import contextlib
+import distutils.version
+import distutils.sysconfig
+import functools
import io
import inspect
+import itertools
import locale
import os
import re
+import sys
import tempfile
import warnings
-import contextlib
-import distutils.sysconfig
-import functools
+
# cbook must import matplotlib only within function
# definitions, so it is safe to import from it here.
from . import cbook
@@ -798,9 +799,8 @@ def gen_candidates():
# The following may use a value of None to suppress the warning.
_deprecated_set = {'axes.hold'} # do NOT include in _all_deprecated
-_all_deprecated = set(chain(_deprecated_ignore_map,
- _deprecated_map,
- _obsolete_set))
+_all_deprecated = set(itertools.chain(
+ _deprecated_ignore_map, _deprecated_map, _obsolete_set))
class RcParams(MutableMapping, dict):
@@ -1223,7 +1223,8 @@ def rc_file(fname):
rcParams.update(rc_params_from_file(fname))
-class rc_context(object):
+@contextlib.contextmanager
+def rc_context(rc=None, fname=None):
"""
Return a context manager for managing rc settings.
@@ -1256,26 +1257,16 @@ class rc_context(object):
"""
- def __init__(self, rc=None, fname=None):
- self.rcdict = rc
- self.fname = fname
- self._rcparams = rcParams.copy()
- try:
- if self.fname:
- rc_file(self.fname)
- if self.rcdict:
- rcParams.update(self.rcdict)
- except:
- # if anything goes wrong, revert rc parameters and re-raise
- rcParams.clear()
- rcParams.update(self._rcparams)
- raise
-
- def __enter__(self):
- return self
-
- def __exit__(self, type, value, tb):
- rcParams.update(self._rcparams)
+ orig = rcParams.copy()
+ try:
+ if fname:
+ rc_file(fname)
+ if rc:
+ rcParams.update(rc)
+ yield
+ finally:
+ # No need to revalidate the original values.
+ dict.update(rcParams, orig)
_use_error_msg = """
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