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Edit: /usr/lib64/python2.7/Demo/tkinter/matt/canvas-reading-tag-info.py

from Tkinter import *

class Test(Frame):
    def printit(self):
        print "hi"

def createWidgets(self):
        self.QUIT = Button(self, text='QUIT', foreground='red',
                           command=self.quit)
        self.QUIT.pack(side=BOTTOM, fill=BOTH)

self.drawing = Canvas(self, width="5i", height="5i")

# make a shape
        pgon = self.drawing.create_polygon(
            10, 10, 110, 10, 110, 110, 10 , 110,
            fill="red", tags=("weee", "foo", "groo"))

# this is how you query an object for its attributes
        # config options FOR CANVAS ITEMS always come back in tuples of length 5.
        # 0 attribute name
        # 1 BLANK
        # 2 BLANK
        # 3 default value
        # 4 current value
        # the blank spots are for consistency with the config command that
        # is used for widgets. (remember, this is for ITEMS drawn
        # on a canvas widget, not widgets)
        option_value = self.drawing.itemconfig(pgon, "stipple")
        print "pgon's current stipple value is -->", option_value[4], "<--"
        option_value = self.drawing.itemconfig(pgon,  "fill")
        print "pgon's current fill value is -->", option_value[4], "<--"
        print "  when he is usually colored -->", option_value[3], "<--"

## here we print out all the tags associated with this object
        option_value = self.drawing.itemconfig(pgon,  "tags")
        print "pgon's tags are", option_value[4]

self.drawing.pack(side=LEFT)

def __init__(self, master=None):
        Frame.__init__(self, master)
        Pack.config(self)
        self.createWidgets()

test = Test()

test.mainloop()

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