MAINT: LogLocator: error messages in subs changed

jor- · jor- · commit 7fa7dd9165d5 · 2018-11-22T09:24:09.000+01:00
diff --git a/lib/matplotlib/ticker.py b/lib/matplotlib/ticker.py
@@ -2133,13 +2133,13 @@ def subs(self, subs):
             try:
                 self._subs = np.asarray(subs, dtype=float)
             except ValueError as e:
-                raise ValueError("If subs is not None and not a string, "
-                                 "it must be a sequence of float.") from e
+                raise ValueError("subs must be None, 'all', 'auto' or "
+                                 "a sequence of floats, not "
+                                 "{}.".format(subs)) from e
             if self._subs.ndim != 1:
-                raise ValueError("If subs is not None and not a string, it "
-                                 "must be a sequence of float. Hence subs "
-                                 "should have 1 dimension but it has {} "
-                                 "dimensions.".format(self._subs.ndim))
+                raise ValueError("A sequence passed to subs must be "
+                                 "1-dimensional, not "
+                                 "{}-dimensional.".format(self._subs.ndim))
 
     def __call__(self):
         'Return the locations of the ticks'
