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A simple text or file viewer component

from Tkinter  import *        class ScrolledText(Frame):     def __init__(self, parent=None, text='', file=None):         Frame.__init__(self, parent)         self.pack(expand=YES, fill=BOTH)                      self.makewidgets()         self.settext(text, file)     def makewidgets(self):         sbar = Scrollbar(self)         text = Text(self, relief=SUNKEN)         sbar.config(command=text.yview)                       text.config(yscrollcommand=sbar.set)                  sbar.pack(side=RIGHT, fill=Y)                         text.pack(side=LEFT, expand=YES, fill=BOTH)           self.text = text     def settext(self, text='', file=None):         if file:              text = open(file, 'r').read()         self.text.delete('1.0', END)                          self.text.insert('1.0', text)                         self.text.mark_set(INSERT, '1.0')                     self.text.focus()                                 def gettext(self):                                        return self.text.get('1.0', END+'-1c')          root = Tk() try:     st = ScrolledText(file=sys.argv[1])               except IndexError:     st = ScrolledText(text='Words\ngo here')          def show(event): print repr(st.gettext())             root.bind('<Key-Escape>', show)                       root.mainloop()