[Tutor] tkinter window not showing max, min and close buttons

[Chris Roy-Smith]

I am working my way through Alan Gauld's tutorial and have just started 
the section on GUI. The windows that are created look odd with no title 
bar or maximise, minimise or close window button.

system Python 2.7 (32 bit)
Ubuntu Linux (unity)
How might I get things to look like in the tutorial?

Thank you
Chris Roy-Smith

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