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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def attr(self, *args, **kwargs):
 """Add an attribute to the element"""

        kwargs.update({k: bool for k in args})
        for key, value in kwargs.items():
            if key == "klass":
                self.attrs["klass"].update(value.split())
            elif key == "style":
                if isinstance(value, str):
                    splitted = iter(re.split(";|:", value))
                    value = dict(zip(splitted, splitted))
                self.attrs["style"].update(value)
            else:
                self.attrs[key] = value
        self._stable = False
        return self