title: Problems with creating a window using tkinter
body: <p>I am trying to create a program using tkinter and it keeps on giving me this one error:</p>
  
  <pre><code>in __init__ self.master = TK()
  NameError: name 'TK' is not defined
  </code></pre>
  
  <p>I am not sure why it is saying that TK isn't defined when I am importing tkinter, can someone please explain what I am doing wrong.</p>
  
  <p>Here is my code:</p>
  
  <pre><code>from tkinter import *
  
  class App:
      def __init__(self):
          self.master = TK()
          frame = Frame(self.master)
          frame.pack()
          self.master.minsize(1080,720)
          self.master.maxsize(1080,720)
          self.master.title("Music Player")
  
  myapp = App()
  myapp.mainloop()
  </code></pre>