<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:

def _add_attrs(self):
        '''Add the found and required attrs to the templ_dict.'''
        for attr in self.template_attrs:
            attr_value = self._get_template_attr(attr)

            if not attr_value:
                continue

            attr, attr_value = self._transform_key_value(
                attr,
                attr_value,
                self.attr_map
            )
            self.templ_dict[attr] = attr_value