add if __name__ == '__main__':, renamed one variable, and one function

ReblochonMasque · ReblochonMasque · commit cdd34a2e1f1c · 2018-05-04T15:24:05.000+08:00
diff --git a/examples/user_calendar.py b/examples/user_calendar.py
@@ -1,16 +1,18 @@
 import tkinter
 import tk_tools
 
-root = tkinter.Tk()
-root.title('TK Tools Calendar')
-cal = tk_tools.Calendar(root)
-cal.pack()
 
+def callback():
+    print(calendar.selection)
 
-def custom_callback():
-    print(cal.selection)
 
+if __name__ == '__main__':
 
-cal.add_callback(custom_callback)
+    root = tkinter.Tk()
+    root.title('TK Tools Calendar')
+    calendar = tk_tools.Calendar(root)
+    calendar.pack()
 
-root.mainloop()
+    calendar.add_callback(callback)
+
+    root.mainloop()
