GUI TKINTER

from tkinter import * 
win = Tk() 
can = Canvas(win, width = 300, height = 300) 
can.pack() 
img = PhotoImage(file="c:\\temp\\amit.gif") 
can.create_image(20,20, anchor=NW, image=img) 
win.mainloop()

from tkinter import *
from tkinter import filedialog
class MyFrame(Tk):
  def __init__(self):
    super().__init__()
    self.b1=Button(self,text="Open",command=self.open)
    self.b1.pack(fill=X)
    self.can=Canvas(self,width=200,height=200,bg="white")
    self.can.pack()
  def open(self):
    ftypes=[("Images",".gif; .png")]
    fnm=filedialog.askopenfilename(filetypes=ftypes)
    if fnm!="":
      self.img=PhotoImage(file=fnm)
      self.can.create_image(0,0,anchor=NW,image=self.img)
frm=MyFrame()
frm.mainloop()

from tkinter import *
class MyFrame(Tk):
  def __init__(self):
    super().__init__()
    self.iname=StringVar()
    self.iname.set("r")
    rb1=Radiobutton(self,text="Ram",variable=self.iname,
    value="r",command=self.show)
    rb1.grid(row=0,column=0)
    rb2=Radiobutton(self,text="Laxman",variable=self.iname,
    value="l",command=self.show)
    rb2.grid(row=0,column=1)
    rb3=Radiobutton(self,text="Seeta",variable=self.iname,
    value="s",command=self.show)
    rb3.grid(row=0,column=2)
    self.can=Canvas(self,width=200,height=300)
    self.can.grid(row=1,column=0,columnspan=3)
    self.img=PhotoImage(file="c:\\temp\\r.gif") 
    self.can.create_image(20,20,anchor=NW,image=self.img)
  def show(self):
    fname=self.iname.get()
    self.img=PhotoImage(file="c:\\temp\\"+fname+".gif")
    self.can.create_image(20,20,anchor=NW,image=self.img)
win=MyFrame()
win.mainloop()