Fix NameError in example code for setting label via method

AdamG · web-flow · commit ae5c8e26e53a · 2019-06-06T15:29:00.000-07:00
The example code currently raises a NameError as "line" is not defined until the 2nd line is run.
diff --git a/lib/matplotlib/axes/_axes.py b/lib/matplotlib/axes/_axes.py
@@ -321,8 +321,8 @@ def legend(self, *args, **kwargs):
 
         or::
 
-            line.set_label('Label via method')
             line, = ax.plot([1, 2, 3])
+            line.set_label('Label via method')
             ax.legend()
 
         Specific lines can be excluded from the automatic legend element
