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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 push(self, node):
 """Push node into inference path :return: True if node is already in context path else False :rtype: bool Allows one to see if the given node has already been looked at for this inference context"""

        name = self.lookupname
        if (node, name) in self.path:
            return True

        self.path.add((node, name))
        return False