diff --git a/bin/tkdnd_minimal_drop.py b/bin/tkdnd_minimal_drop.py
--- a/bin/tkdnd_minimal_drop.py
+++ b/bin/tkdnd_minimal_drop.py
@@ -13,8 +13,7 @@ label.config(text="drop target %s" % lab
 frame1 = tk.Frame()
 frame1.pack()
 
-labelInner = tk.Label(frame1, borderwidth=2,
-                      relief='groove', padx=10, pady=10)
+labelInner = tk.Label(frame1, borderwidth=2, relief='groove', padx=10, pady=10)
 labelInner.pack(side='left')
 labelInner.config(text="drop target inner %s" % labelInner._w)
 tk.Label(frame1, text="not a target").pack(side='left')
@@ -22,21 +21,36 @@ tk.Label(frame1, text="not a target").pa
 
 def onDrop(ev):
     print "onDrop", ev
+
+
 def enter(ev):
     print 'enter', ev
+
+
 def leave(ev):
     print 'leave', ev
-dropTargetRegister(label, onDrop=onDrop, onDropEnter=enter, onDropLeave=leave,
+
+
+dropTargetRegister(label,
+                   onDrop=onDrop,
+                   onDropEnter=enter,
+                   onDropLeave=leave,
                    hoverStyle=dict(background="yellow", relief='groove'))
 
-dropTargetRegister(labelInner, onDrop=onDrop, onDropEnter=enter, onDropLeave=leave,
+dropTargetRegister(labelInner,
+                   onDrop=onDrop,
+                   onDropEnter=enter,
+                   onDropLeave=leave,
                    hoverStyle=dict(background="yellow", relief='groove'))
 
+
 def prn():
-    print "cont", root.winfo_containing(201,151)
+    print "cont", root.winfo_containing(201, 151)
+
+
 b = tk.Button(root, text="coord", command=prn)
 b.pack()
 
 #tk.mainloop()
-tksupport.install(root,ms=10)
+tksupport.install(root, ms=10)
 reactor.run()