[Python] check if element exists in priorityQueue of tuples

Say I have this code:

q = PriorityQueue()
a = ((1,1), 10, 0)
b = ((2,2), 99, 200)
q.put(a)
q.put(b)


I'd like to check if the element (1, 1) exists in any of the tuples in the queue. Is there a way to do this?

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