code clean up

PathPlanning/RRT/simple_rrt.py

@@ -94,7 +94,7 @@ class RRT():
 
         return path
 
-    def DrawGraph(self, rnd=None):
+    def DrawGraph(self, rnd=None):  # pragma: no cover
         """
         Draw Graph
         """
@@ -162,7 +162,7 @@ def main():
     path = rrt.Planning(animation=show_animation)
 
     # Draw final path
-    if show_animation:
+    if show_animation:  # pragma: no cover
         rrt.DrawGraph()
         plt.plot([x for (x, y) in path], [y for (x, y) in path], '-r')
         plt.grid(True)