python - Use 4 input boxes rather than 3 in tkinter? -

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i working on computing level project. using tkinter create text input dialog box. can make work 3 labels need have 4, know if possible? , if how?

many thanks

edit: http://pastebin.com/7yx7ep51 link has code creating dialogue box. @ moment 4th ones commented out testing other parts

the problem closing parenthesis: 

root = tk()  label1 = label(root, text = "dive number") e1 = entry(root, bd = 5)  label2 = label(root, text = "time in") e2 = entry(root, bd = 5)  label3 = label(root, text = "time out") e3 = entry(root, bd = 5)   label4 = label(root, text = ("max depth"))#--------------new-------------- e4 = entry(root, bd = 5)  def getinfo():     print (e1.get())     print (e2.get())     print (e3.get())     print (e4.get())  submit = button(root, text = "submit", command = getinfo) label1.pack() e1.pack() label2.pack() e2.pack() label3.pack() e3.pack() label4.pack() e4.pack() submit.pack(side =bottom) root.mainloop()

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