title: Tkinter - How to display image when clicking a button?
body: <p>First time here so forgive me as this is my FIRST attempt at making a silly GUI game (if you want to call it that). I'm trying to get the user to click a button and the image of their selection pops up. I can't seem to figure out how to get the image to pop up though.</p>
  
  <p>Image does show if I run it separately.</p>
  
  <p>My code:</p>
  
  <pre><code>from Tkinter import *
  
  root = Tk()
  
  class PokemonClass(object):
      def __init__(self, master):
          frame = Frame(master)
          frame.pack()
  
          self.WelcomeLabel = Label(root, text="Welcome! Pick your Pokemon!",
                                    bg="Black", fg="White")
          self.WelcomeLabel.pack(fill=X)
  
          self.CharButton = Button(root, text="Charmander", bg="RED", fg="White",
                                   command=self.CharClick)
          self.CharButton.pack(side=LEFT, fill=X)
  
          self.SquirtButton = Button(root, text="Squirtle", bg="Blue", fg="White")
          self.SquirtButton.pack(side=LEFT, fill=X)
  
          self.BulbButton = Button(root, text="Bulbasaur", bg="Dark Green",
                                   fg="White")
          self.BulbButton.pack(side=LEFT, fill=X)
  
      def CharClick(self):
          print "You like Charmander!"
          global CharSwitch
          CharSwitch = 'Yes'
  
  CharSwitch = 'No'
  
  if CharSwitch == 'Yes':
      CharPhoto = PhotoImage(file="Charmander.gif")
      ChLabel = Label(root, image=CharPhoto)
      ChLabel.pack()
  
  k = PokemonClass(root)
  root.mainloop()
  </code></pre>