PYTHON!!!!

Complete the below function which takes a list of distinct positive integers and a target positive integer value, and then returns a list of the pairs of integers where each pair sums up to the target value. Each pair is represented as a tuple.

For example, pairsum([3,2,6,1,5,4], 7) should return [(1,6), (2,5), (3,4)] If there are no pairs matching the target value, then you should return an empty list. IMPORTANT: the first integer in a tuple must be always smaller than the second integer. So, (5,3) is wrong and (3,5) is correct, and the resulting list must be in ascending order of first element in each tuple.

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def pairsum(list1, target):