#Draw a set of nested squares, increasing in size from turtle import *  number_of_shapes = 4  for shape in range(1, number_of_shapes + 1):     #Draw a square     for sides in range(1,5):         forward(20 + shape * 10)         right(90)  #Move to position of next square     penup()     goto(shape * 10, shape * 10)     pendown() 

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