DOC/PEP8 : details related to PR matplotlib#3433

Author: tacaswell

doc/users/whats_new/plotting.rst

@@ -0,0 +1,5 @@
+Added center and frame kwargs to pie
+````````````````````````````````````
+
+These control where the center of the pie graph are and if
+the Axes frame is shown.

lib/matplotlib/tests/test_axes.py

@@ -3398,21 +3398,20 @@ def test_pie_frame_grid():
     # only "explode" the 2nd slice (i.e. 'Hogs')
     explode = (0, 0.1, 0, 0)
 
-
     plt.pie(sizes, explode=explode, labels=labels, colors=colors,
             autopct='%1.1f%%', shadow=True, startangle=90,
             wedgeprops={'linewidth': 0},
-            frame=True, center=(2,2))
+            frame=True, center=(2, 2))
 
     plt.pie(sizes[::-1], explode=explode, labels=labels, colors=colors,
             autopct='%1.1f%%', shadow=True, startangle=90,
             wedgeprops={'linewidth': 0},
-            frame=True, center=(5,2))
+            frame=True, center=(5, 2))
 
     plt.pie(sizes, explode=explode[::-1], labels=labels, colors=colors,
             autopct='%1.1f%%', shadow=True, startangle=90,
             wedgeprops={'linewidth': 0},
-            frame=True, center=(3,5))
+            frame=True, center=(3, 5))
     # Set aspect ratio to be equal so that pie is drawn as a circle.
     plt.axis('equal')