<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def destructuring_stmt_handle(self, original, loc, tokens):
 """Process match assign blocks."""

        internal_assert(len(tokens) == 2, "invalid destructuring assignment tokens", tokens)
        matches, item = tokens
        out = match_handle(loc, [matches, "in", item, None])
        out += self.pattern_error(original, loc, match_to_var, match_check_var)
        return out