moved error message into ValueError

jcalbert · jcalbert · commit fc0f3b9162d5 · 2019-04-26T17:20:27.000-04:00
made 2-argument errorevery give a more accurate error message
diff --git a/lib/matplotlib/axes/_axes.py b/lib/matplotlib/axes/_axes.py
@@ -3200,11 +3200,12 @@ def errorbar(self, x, y, yerr=None, xerr=None,
         except TypeError:
             offset = 0
 
-        int_msg = 'errorevery must be positive integer or tuple of integers'
         if errorevery < 1 or int(errorevery) != errorevery:
-            raise ValueError(int_msg)
+            raise ValueError(
+                'errorevery must be positive integer or tuple of integers')
         if int(offset) != offset:
-            raise ValueError(int_msg)
+            raise ValueError(
+                'errorevery\'s starting index must be an integer')
 
         self._process_unit_info(xdata=x, ydata=y, kwargs=kwargs)
 
