Tkinter reference: A GUI for Python

If you do not provide a stickyattribute, the default behavior is to center the widget in the cell. You can position the widget in a corner of the cell by setting stickyto NE(top right), SE(bottom right), SW(bottom left), or NW(top left). You can position the widget against one side of the cell by setting stickyto N(top center), E(right center), S(bottom center), or W(left center). ................
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