build.py

class Build:
    tag = 'build'
    known = {}

    def __init__(self, xml):
        self.name = ""
        self.desc = ""
        self.contents = {}
        self.get_known()
        self.build(xml)

    def get_keys(self):
        return self.__dict__.keys()

    def set_value(self, key, value):
        self.__setattr__(key, value)

    def get_known(self):
        if self.known == {}:
            pass

    def build(self, xml):
        for attr in xml.attrib:
            if attr in self.get_keys():
                self.set_value(attr, xml.attrib[attr])

        for child in xml.child:
            self.add_item(child)

    def add_item(self, item):
        if item.tag in self.known:
            content = self.make_item(item)
            self.contents[content.name] = content

    def make_item(self, item):
        return self.known[item.tag](item)