On 02/09/11 12:18, ???????? wrote:
> 
> in my program,myprint is:
> 
> def  myprint(arg):
>     x=arg.x
>     y=arg.y
>     canvas.create_text(x,y,text='i am here')
>     


Take advantage of Tk canvas tags.

def myprint(arg):
    x = arg.x
    y = arg.y
    canvas.delete('text')   # delete any canvas items with the tag name text
    canvas.create_text(x, y, text='i am here', tags='text')

Regards,

John

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