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Wed Sep 21 02:16:55 EDT 2005 · http://mail.python.org/pipermail/python-list/2005-September/312356.html

I'm relatively new to python and I've run into this problem.

DECLARING CLASS

      class structure:
            def __init__(self, folders = []):        
                  self.folders = folders

      def add_folder(self, folder):
            self.folders.append(tuple(folder))

Now I try to make an instance of this class

      structure1 = structure()
      structure1.add_folder([('foo'),])
      print structure1.folders

This returns: [('foo',)]

This works fine. But when I try to make another instance of that class...

      structure2 = structure()
      print structure2.folders

This now also returns: [('foo',)]
Even though I haven't added any folders to this new instance

What am I doing wrong?

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What am i doing Wrong?