matplotlib
diff --git a/‎examples/user_interfaces/embedding_in_tk2_sgskip.py‎
Lines changed: 0 additions & 49 deletions b/‎examples/user_interfaces/embedding_in_tk2_sgskip.py‎
Lines changed: 0 additions & 49 deletions
diff --git a/‎examples/user_interfaces/embedding_in_tk_sgskip.py‎
Lines changed: 20 additions & 29 deletions b/‎examples/user_interfaces/embedding_in_tk_sgskip.py‎
Lines changed: 20 additions & 29 deletions
@@ -4,37 +4,26 @@
 ===============
 
 """
-import matplotlib
-matplotlib.use('TkAgg')
-
-from numpy import arange, sin, pi
-from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg, NavigationToolbar2TkAgg
-# implement the default mpl key bindings
-from matplotlib.backend_bases import key_press_handler
 
+from six.moves import tkinter as Tk
 
+from matplotlib.backends.backend_tkagg import (
+    FigureCanvasTkAgg, NavigationToolbar2TkAgg)
+# Implement the default Matplotlib key bindings.
+from matplotlib.backend_bases import key_press_handler
 from matplotlib.figure import Figure
 
-import sys
-if sys.version_info[0] < 3:
-    import Tkinter as Tk
-else:
-    import tkinter as Tk
-
-root = Tk.Tk()
-root.wm_title("Embedding in TK")
+import numpy as np
 
 
-f = Figure(figsize=(5, 4), dpi=100)
-a = f.add_subplot(111)
-t = arange(0.0, 3.0, 0.01)
-s = sin(2*pi*t)
-
-a.plot(t, s)
+root = Tk.Tk()
+root.wm_title("Embedding in Tk")
 
+fig = Figure(figsize=(5, 4), dpi=100)
+t = np.arange(0, 3, .01)
+fig.add_subplot(111).plot(t, 2 * np.sin(2 * np.pi * t))
 
-# a tk.DrawingArea
-canvas = FigureCanvasTkAgg(f, master=root)
+canvas = FigureCanvasTkAgg(fig, master=root)  # A tk.DrawingArea.
 canvas.draw()
 canvas.get_tk_widget().pack(side=Tk.TOP, fill=Tk.BOTH, expand=1)
 
@@ -43,21 +32,23 @@
 canvas._tkcanvas.pack(side=Tk.TOP, fill=Tk.BOTH, expand=1)
 
 
-def on_key_event(event):
-    print('you pressed %s' % event.key)
+def on_key_press(event):
+    print("you pressed {}".format(event.key))
     key_press_handler(event, canvas, toolbar)
 
-canvas.mpl_connect('key_press_event', on_key_event)
+
+canvas.mpl_connect("key_press_event", on_key_press)
 
 
 def _quit():
     root.quit()     # stops mainloop
     root.destroy()  # this is necessary on Windows to prevent
                     # Fatal Python Error: PyEval_RestoreThread: NULL tstate
 
-button = Tk.Button(master=root, text='Quit', command=_quit)
+
+button = Tk.Button(master=root, text="Quit", command=_quit)
 button.pack(side=Tk.BOTTOM)
 
 Tk.mainloop()
-# If you put root.destroy() here, it will cause an error if
-# the window is closed with the window manager.
+# If you put root.destroy() here, it will cause an error if the window is
+# closed with the window manager.