foo.py

gistfile1.py

class ArticleFolderCollection(object):
    """A simple iterable collection for ArticleFolder objects"""
    def __init__(self):
        self.folders = []

    def __iter__(self):
        for f in self.folders:
            yield f

    def __contains__(self, folder):
        for f in self.folders:
            if f.id == folder.id:
                return True
        return False

    def __repr__(self):
        out = '%d %s' % (len(self.folders),' folders\n')
        for f in self.folders:
            out += '%s : %s\n' % (f.id, f.name)
        return out

    def __len__(self):
        return len(self.folders)
            
    def append(self,folder):
        self.folders.append(folder)

    def findFolderByField(self, field, value):
        for f in self.folders:
            if f[field] == value:
                return f
        return None