I'm doing PS9 - 2008 course. I'm having trouble with problems 3 and 4.

Problem 3: I have to find the shape with the greatest area which is calculated by sending it to the appropriate class. The code works fine for this. But if there a 2 shapes with the greatest (and hence the same) area I need to return both of them. I'm not sure how to group the classes together and then return them.

Problem 4:When I print the shapes a message should be sent to the shape class and it should use the __str__ method to print them.I think it's not working because I can't remove the commas when I open the file.

Any help would be appreciated. Thanks.

here's my code http://dpaste.com/813570/

Question

I'm doing PS9 - 2008 course. I'm having trouble with problems 3 and 4.

Problem 3: I have to find the shape with the greatest area which is calculated by sending it to the appropriate class. The code works fine for this. But if there a 2 shapes with the greatest (and hence the same) area I need to return both of them. I'm not sure how to group the classes together and then return them.

Problem 4:When I print the shapes a message should be sent to the shape class and it should use the __str__ method to print them.I think it's not working because I can't remove the commas when I open the file.

Any help would be appreciated. Thanks.

here's my code http://dpaste.com/813570/