title: Why justify and anchor do not work for Label of Python Tkinter
body: <p>I am using following code and trying to center the text on labels: </p>
  
  <pre><code>from tkinter import * 
  root = Tk()
  llist = ["first:","second label:","a really long label:","fourth:","fifth:"]
  nrow = 0
  for i in range(len(llist)):
      # Label(root, text=llist[i], justify='right').grid(row=nrow, column=0) # does not work
      # Label(root, text=llist[i], justify=RIGHT).grid(row=nrow, column=0) # does not work
      # Label(root, text=llist[i], anchor=E).grid(row=nrow, column=0) # does not work
      # Label(root, text=llist[i], anchor=E, justify=RIGHT).grid(row=nrow, column=0) # does not work
      Label(root, text=llist[i]).grid(row=nrow, column=0, sticky=E) # WORKS; 
      Entry(root).grid(row=nrow, column=1)
      nrow += 1
  root.mainloop()
  </code></pre>
  
  <p>The text remains in <code>center</code> with options that I mention as not working in above code:</p>
  
  <p><a href="https://i.stack.imgur.com/nwX2G.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/nwX2G.png" alt="enter image description here"></a></p>
  
  <p>Only with <code>sticky</code> option in the <code>grid()</code> it works properly: </p>
  
  <p><a href="https://i.stack.imgur.com/1zALG.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/1zALG.png" alt="enter image description here"></a></p>
  
  <p>Why <code>justify</code> and <code>anchor</code> options of <code>Label</code> do not work in above code, even though they are mentioned at several places such as <a href="http://effbot.org/tkinterbook/label.htm" rel="nofollow noreferrer">http://effbot.org/tkinterbook/label.htm</a> ? How can <code>justify</code> and <code>anchor</code> be used to align text in Labels?</p>