title: Tkinter: Creating multiple frames inside a frame class
body: <p>I have a problem wherein I cannot create multiple distinct frames within a given frame. This is just a small chunk of my overall application but basically I've separated different Frames into classes and i call those classes depending on the situation.</p>
  
  <p>What I am looking for is how to create 2 or more frames within this frame class. As of right now, the distinct frames aren't being created so when place them in a grid they overlap and replace each other. (i.e. frame2.label overlaps with frame1.label)</p>
  
  <pre><code>class MainPage(tk.Frame):
      def __init__(self, parent, controller):
          tk.Frame.__init__(self,parent)
  
          #First frame inside the current MainPage Window Frame
          frame1 = Frame(self, bg = "red")
          frame1.grid(row = 0, column = 0, sticky = W)
  
          frame1.label = tk.Label(self, text="Main Page", font=SMALL_FONT)
          frame1.label.grid(row = 0, column = 0, sticky = W)
  
          itemScanNumber = StringVar()    
          frame1.EntryBox = ttk.Entry(self, textvariable = itemScanNumber) 
          frame1.EntryBox.grid(row = 0, column = 1, sticky = W)
  
          print(itemScanNumber.get())
  
          def printNumber():
              print("Your Number: " + itemScanNumber.get())
              return
  
          frame1.button = ttk.Button(self, text = "CLICK ME FOR SCAN NUMBER!", command = printNumber)
          frame1.button.grid(row = 0, column = 2, sticky = W)
  
          frame1.button1 = ttk.Button(self, text = "CLICK ME!", command = lambda: controller.show_frame(MasterFilePage))
          frame1.button1.grid(row = 0, column = 3, sticky = W)
  
  
          #Second frame inside the current MainPage Window Frame
          frame2 = Frame(self, bg = "blue")
          frame2.grid(row = 1, column = 0, sticky = W)
  
          frame2.label = tk.Label(self, text="Main Page2", font=SMALL_FONT)
          frame2.label.grid(row = 0, column = 0, sticky = W)
  </code></pre>