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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 find_next_comma(self, node, sub):
 """Find comma after sub andd add NodeWithPosition in node"""

        position = (sub.last_line, sub.last_col)
        first, last = find_next_comma(self.lcode, position)
        if first:  # comma exists
            node.op_pos.append(NodeWithPosition(last, first))