Hi
I was trying to learn about classes in Python and have been playing
around but I am having a problem with the deepcopy function. I want to
have a function that returns a clean copy of an object that you can
change without it changing the original, but no matter what I do the
original changes as well. Can anyone give ma a pointer?
Thanks
Michael
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import copy
class point:
"represents a point in 2d space"
x = 0
y = 0
def printpoints(self):
print "x is %g, y is %g" %(self.x, self.y)
class rectangle:
"represents a rectangle"
width = 0
height = 0
corner = point()
def move_rectangle(rect, dx, dy):
rect2 = copy.deepcopy(rect)
rect2.corner.x += dx
rect2.corner.y += dy
return rect2
r1 = rectangle()
r1.width = 20
r1.height = 40
r1.corner.x = 10
r1.corner.y = 10
r2 = move_rectangle(r1,5,2)
print 'Rectangle', r1.width, r1.height
r1.corner.printpoints()
print 'Rectangle 2', r2.width, r2.height
r2.corner.printpoints()
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