Merge pull request #15741 from meeseeksmachine/auto-backport-of-pr-15729-on-v3.1.x

timhoffm · web-flow · commit b732593818f7 · 2019-11-22T00:04:32.000+01:00
Backport PR #15729 on branch v3.1.x (Catch correct parse errror type for dateutil >= 2.8.1)
diff --git a/lib/matplotlib/category.py b/lib/matplotlib/category.py
@@ -191,7 +191,8 @@ def _str_is_convertible(val):
         except ValueError:
             try:
                 dateutil.parser.parse(val)
-            except ValueError:
+            except (ValueError, TypeError):
+                # TypeError if dateutil >= 2.8.1 else ValueError
                 return False
         return True
 
