For me, this ran well the first time I executed the code. Subsequent runs yielded an error similar to this for all packages:

Traceback (most recent call last):
File “C:\Python\lib\tkinter\__init__.py”, line 4014, in __del__
self.tk.call(‘image’, ‘delete’, self.name)
RuntimeError: main thread is not in main loop
Tcl_AsyncDelete: async handler deleted by the wrong thread

Thoughts?