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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 update_filter(self):
 """ Update the filter according to the new properties :return: True if the filter changed, else False :raise ValueError: The filter is invalid """

        # Consider the filter invalid
        self.valid_filter = False

        try:
            # Format the new filter
            filter_str = self._original_filter.format(
                **self._component_context.properties
            )
        except KeyError as ex:
            # An entry is missing: abandon
            logging.warning("Missing filter value: %s", ex)
            raise ValueError("Missing filter value")

        try:
            # Parse the new LDAP filter
            new_filter = ldapfilter.get_ldap_filter(filter_str)
        except (TypeError, ValueError) as ex:
            logging.warning("Error parsing filter: %s", ex)
            raise ValueError("Error parsing filter")

        # The filter is valid
        self.valid_filter = True

        # Compare to the "old" one
        if new_filter != self.requirement.filter:
            # Replace the requirement filter
            self.requirement.filter = new_filter
            return True

        # Same filter
        return False