Mar 3, 2018
diff --git a/lib/matplotlib/axes/_base.py b/lib/matplotlib/axes/_base.py
            yield from self._plot_args(this, kwargs)


 _shared_x_axes = cbook.Grouper()
 _shared_y_axes = cbook.Grouper()
 _twinned_axes = cbook.Grouper()


 class _AxesBase(martist.Artist):
    """
    """
    name = "rectilinear"

    _shared_x_axes = cbook.Grouper()
    _shared_y_axes = cbook.Grouper()
    _twinned_axes = cbook.Grouper()

    def __str__(self):
        return "{0}({1[0]:g},{1[1]:g};{1[2]:g}x{1[3]:g})".format(
            type(self).__name__, self._position.bounds)
        """ % {'scale': ' | '.join(
            [repr(x) for x in mscale.get_scale_names()])}
        martist.Artist.__init__(self)

        # Reference the global instances in the instance dict to support
        # pickling.
        self._shared_x_axes = _shared_x_axes
        self._shared_y_axes = _shared_y_axes
        self._twinned_axes = _twinned_axes

        if isinstance(rect, mtransforms.Bbox):
            self._position = rect
        else:
diff --git a/lib/matplotlib/cbook/__init__.py b/lib/matplotlib/cbook/__init__.py
    def __init__(self, init=()):
        self._mapping = {ref(x): [ref(x)] for x in init}

    def __getstate__(self):
        mapping = {}
        for k, vs in self._mapping.items():
            k = k()
            if k is None:
                continue
            mapping[k] = l = []
            for v in vs:
                v = v()
                if v is None:
                    continue
                l.append(v)
        return {"_mapping": mapping}

    def __setstate__(self, state):
        self.__dict__ = state
        self._mapping = {ref(k): [ref(v) for v in vs]
                         for k, vs in self._mapping.items()}

    def __contains__(self, item):
        return ref(item) in self._mapping

diff --git a/lib/matplotlib/tests/test_pickle.py b/lib/matplotlib/tests/test_pickle.py
    except RecursionError:
        print('rrulewrapper pickling test failed')
        raise


 def test_shared():
    fig, axs = plt.subplots(2, sharex=True)
    fig = pickle.loads(pickle.dumps(fig))
    fig.axes[0].set_xlim(10, 20)
    assert fig.axes[1].get_xlim() == (10, 20)
Original file line number	Diff line number	Diff line change
Expand Up		@@ -395,15 +395,16 @@ def _grab_next_args(self, args, *kwargs):
		yield from self._plot_args(this, kwargs)


		_shared_x_axes = cbook.Grouper()
		_shared_y_axes = cbook.Grouper()
		_twinned_axes = cbook.Grouper()


		class _AxesBase(martist.Artist):
		"""
		"""
		name = "rectilinear"

		_shared_x_axes = cbook.Grouper()
		_shared_y_axes = cbook.Grouper()
		_twinned_axes = cbook.Grouper()

		def __str__(self):
		return "{0}({1[0]:g},{1[1]:g};{1[2]:g}x{1[3]:g})".format(
		type(self).__name__, self._position.bounds)
Expand DownExpand Up		@@ -468,6 +469,13 @@ def __init__(self, fig, rect,
		""" % {'scale': ' \| '.join(
		[repr(x) for x in mscale.get_scale_names()])}
		martist.Artist.__init__(self)

		# Reference the global instances in the instance dict to support
		# pickling.
		self._shared_x_axes = _shared_x_axes
		self._shared_y_axes = _shared_y_axes
		self._twinned_axes = _twinned_axes

		if isinstance(rect, mtransforms.Bbox):
		self._position = rect
		else:
Expand Down
Original file line number	Diff line number	Diff line change
Expand Up		@@ -981,6 +981,25 @@ class Grouper(object):
		def __init__(self, init=()):
		self._mapping = {ref(x): [ref(x)] for x in init}

		def __getstate__(self):
		mapping = {}
		for k, vs in self._mapping.items():
		k = k()
		if k is None:
		continue
		mapping[k] = l = []
		for v in vs:
		v = v()
		if v is None:
		continue
		l.append(v)
		return {"_mapping": mapping}

		def __setstate__(self, state):
		self.__dict__ = state
		self._mapping = {ref(k): [ref(v) for v in vs]
		for k, vs in self._mapping.items()}

		def __contains__(self, item):
		return ref(item) in self._mapping

Expand Down
Original file line number	Diff line number	Diff line change
Expand Up		@@ -187,3 +187,10 @@ def test_rrulewrapper():
		except RecursionError:
		print('rrulewrapper pickling test failed')
		raise


		def test_shared():
		fig, axs = plt.subplots(2, sharex=True)
		fig = pickle.loads(pickle.dumps(fig))
		fig.axes[0].set_xlim(10, 20)
		assert fig.axes[1].get_xlim() == (10, 20)