Define RecursionError for Python versions < 3.5

cclauss · web-flow · commit fc52f2390c87 · 2018-02-11T23:02:55.000+01:00
__RecursionError__ is used on line 189. https://docs.python.org/3/library/exceptions.html#RecursionError
diff --git a/lib/matplotlib/tests/test_pickle.py b/lib/matplotlib/tests/test_pickle.py
@@ -12,6 +12,11 @@
 import matplotlib.pyplot as plt
 import matplotlib.transforms as mtransforms
 
+try:  # https://docs.python.org/3/library/exceptions.html#RecursionError
+    RecursionError                 # Python 3.5+
+except NameError:
+    RecursionError = RuntimeError  # Python < 3.5
+
 
 def test_simple():
     fig = plt.figure()
