Better handle deprecated rcParams.

anntzer · anntzer · commit 214dbcaeb092 · 2019-04-11T15:15:03.000+02:00
- Don't trigger a deprecation in repr() (e.g., in `$ pydoc matplotlib`).
- Don't trigger a deprecation in test_style.py::test_alias.
diff --git a/lib/matplotlib/__init__.py b/lib/matplotlib/__init__.py
@@ -824,8 +824,9 @@ def __getitem__(self, key):
     def __repr__(self):
         class_name = self.__class__.__name__
         indent = len(class_name) + 1
-        repr_split = pprint.pformat(dict(self), indent=1,
-                                    width=80 - indent).split('\n')
+        with cbook._suppress_matplotlib_deprecation_warning():
+            repr_split = pprint.pformat(dict(self), indent=1,
+                                        width=80 - indent).split('\n')
         repr_indented = ('\n' + ' ' * indent).join(repr_split)
         return '{}({})'.format(class_name, repr_indented)
 
diff --git a/lib/matplotlib/tests/test_style.py b/lib/matplotlib/tests/test_style.py
@@ -145,7 +145,7 @@ def test_alias(equiv_styles):
     rc_dicts = []
     for sty in equiv_styles:
         with style.context(sty):
-            rc_dicts.append(dict(mpl.rcParams))
+            rc_dicts.append(mpl.rcParams.copy())
 
     rc_base = rc_dicts[0]
     for nm, rc in zip(equiv_styles[1:], rc_dicts[1:]):
