title: Tkinter: Why do child-frames not appear in one frame, but do in another?
body: <p>I am learning tkinter.</p>
  <p>I am trying to create the skeleton for an app right now, and I am working on learning tk.Frame( ). For background, I have a tk.Tk( ) root with 3 child tk.Frame( )s, and each of those will have a number of tk.Frame( ) children.</p>
  <p>Now, things went as expected for creating the root and the 3 child frames in the master=root . Furthermore, the top child frame of root can have frames in it just fine. <strong>However, the frames that I put into the middle child frame of root do not display. Does anyone know why this may occur? Another issue is that a label that I have in one frame disappears once I put a child frame into a separate master frame.</strong></p>
  <p>My code below should help explain.</p>
  <p>from commands import *</p>
  <pre><code># create root
  root = tk.Tk()
  appTitle = &quot;Fotoshoop&quot;
  root.title(appTitle)
  
  factor = 1.618
  rootWidth = 800
  rootHeight = int(rootWidth / factor)
  geo = &quot;{}x{}&quot;.format(str(rootWidth), str(rootHeight))
  root.geometry(geo)
  # root.grid()
  
  # LAYER 1
  l1padx = 10
  l1pady = l1padx
  l1w = 200
  l1h = int(l1w / factor)
  l1color = &quot;gray&quot;
  
  Header = tk.Frame(root, bg=l1color, width=l1w, height=l1h)
  Header.grid(row=0, column=0,
              ipadx=l1padx, ipady=l1pady, padx=l1padx, pady=l1pady)
  
  Transformations = tk.Frame(root, bg=l1color, width=l1w, height=l1h)
  Transformations.grid(row=1, column=0,
                       ipadx=l1padx, ipady=l1pady, padx=l1padx, pady=l1pady)
  
  Content = tk.Frame(root, bg=l1color, width=l1w, height=l1h)
  Content.grid(row=2, column=0,
               ipadx=l1padx, ipady=l1pady, padx=l1padx, pady=l1pady)
  
  
  # LAYER 2
  l2padx = 5
  l2pady = l2padx
  l2color = &quot;blue&quot;
  
  msg_header = &quot;Welcome!&quot;
  Label_Header = tk.Label(Header, bg=l2color, text=msg_header)
  Label_Header.grid(row=0, column=0, ipadx=l2padx,
                    ipady=l2pady, padx=l2padx, pady=l2pady)
  
  Label_Header = tk.Label(Header, bg=l2color, text=&quot;PLACEHOLDER FOR LINKS&quot;)
  Label_Header.grid(row=0, column=1, ipadx=l2padx,
                    ipady=l2pady, padx=l2padx, pady=l2pady)
  
  #PROBLEM the following code does not display
  #        in addition, once added, Label_Header does not display
  Transformations_left = tk.Frame(
      Transformations, bg=l2color)
  Label_Header.grid(row=0, column=0, ipadx=l2padx,
                    ipady=l2pady, padx=l2padx, pady=l2pady
                    )
  
  root.mainloop()
  </code></pre>
  <p>Thank you!</p>