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import Tkinter
import ttk


    

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def calculate(*args):
    try:
        value = float(feet.get())
        meters.set((0.3048 * value * 10000.0 + 0.5)/10000.0)
    except ValueError:
        pass
    
root = Tkinter.Tk()
root.title("Feet to Meters")

mainframe = ttk.Frame(root, padding="3 3 12 12")
mainframe.grid(column=0, row=0, sticky=(N, W, E, S))
mainframe.columnconfigure(0, weight=1)
mainframe.rowconfigure(0, weight=1)

feet = StringVar()
meters = StringVar()

feet_entry = ttk.Entry(mainframe, width=7, textvariable=feet)
feet_entry.grid(column=2, row=1, sticky=(W, E))

ttk.Label(mainframe, textvariable=meters).grid(column=2, row=2, sticky=(W, E))
ttk.Button(mainframe, text="Calculate", command=calculate).grid(column=3, row=3, sticky=W)

ttk.Label(mainframe, text="feet").grid(column=3, row=1, sticky=W)
ttk.Label(mainframe, text="is equivalent to").grid(column=1, row=2, sticky=E)
ttk.Label(mainframe, text="meters").grid(column=3, row=2, sticky=W)

for child in mainframe.winfo_children(): child.grid_configure(padx=5, pady=5)

feet_entry.focus()
root.bind('<Return>', calculate)

root.mainloop()


    

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def option_not_implemented():
    print "option not implemented"


    

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parent = Tkinter.Tk()
parent.title("Tab interface")
n = ttk.Notebook(parent)
f1 = ttk.Frame(n); # first page, which would get widgets gridded into it
L1Label = ttk.Label(f1,text='L1: Raw data')
L1Label.grid(row=0,column=0,columnspan=2)
L2Label = ttk.Label(f1,text='L2: QA/QC')
L2Label.grid(row=0,column=2,columnspan=2)
L3Label = ttk.Label(f1,text='L3: Process')
L3Label.grid(row=0,column=4,columnspan=2)
doL1Button = ttk.Button (f1, text="Read L1 file", command=option_not_implemented )
doL1Button.grid(row=1,column=0,columnspan=2)
doL2Button = ttk.Button (f1, text="Do L2 QA/QC", command=option_not_implemented )
doL2Button.grid(row=1,column=2,columnspan=2)
doL3Button = ttk.Button (f1, text="Do L3 processing", command=option_not_implemented )
doL3Button.grid(row=1,column=4,columnspan=2)

#ttk.Button(f1, text='Exit', command=parent.destroy).grid(column=1, row=1)
f2 = ttk.Frame(n); # second page
ttk.Button(f2, text='Exit', command=parent.destroy).grid(column=1, row=1)
n.add(f1, text='One')
n.add(f2, text='Two')
n.grid()
parent.mainloop()


    

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