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POInitializing superclasses in Python
 

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    <p>I'm learning Python. At the moment, I can do what I want to do by composition, but when I try to do the same thing using inheritance, I get an error. Here's my code. I'm basically trying to make a class for a colored square. </p> <pre><code>from graphics import * class Block(Rectangle): def __init__(self, corner, colour): self.corner = corner self.colour = colour self.x1 = self.corner.getX() * 30 self.y1 = self.corner.getY() * 30 self.x2 = self.x1 + 30 self.y2 = self.y1 + 30 self.point1 = Point(self.x1, self.y1) self.point2 = Point(self.x2, self. y2) Rectangle.__init__(self, self.point1, self.point2) def draw(self, window): self.window = window self.Rectangle.draw(self.window) new_win = GraphWin("thingy", 700, 500) corner = Point(1, 1) square1 = Block(corner, 'red') square1.draw(new_win) new_win.mainloop() </code></pre> <p>The error I get is</p> <pre><code>File "F:\Python\4\4_3.py", line 24, in draw self.draw(self.window) </code></pre> <p>The error is repeated indefinitely.</p> <p>Here is the code that does what I want when I do it with composition:</p> <pre><code>from graphics import * class Block(): def __init__(self, corner, colour): self.corner = corner self.colour = colour self.x1 = self.corner.getX() * 30 self.y1 = self.corner.getY() * 30 self.x2 = self.x1 + 30 self.y2 = self.y1 + 30 self.point1 = Point(self.x1, self.y1) self.point2 = Point(self.x2, self. y2) self.Rectangle = Rectangle(self.point1, self.point2) def draw(self, window): self.window = window self.Rectangle.draw(self.window) self.Rectangle.setFill(self.colour) new_win = GraphWin("thingy", 150, 150) corner = Point(1, 1) square1 = Block(corner, 'red') square1.draw(new_win) new_win.mainloop() </code></pre>
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    1. COYou haven't actually shown the code that causes an error (right?). Or the error. How are we supposed to answer without that? http://sscce.org/
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    2. COCan you post the code where you're doing it with inheritance?
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    3. COI guess he wants it to inherit from Rectangle...
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