find_pairs_sum_k.py

# Given an array of numbers, find all the
# pairs of numbers which sum upto `k`


def find_pairs(num_array, k):
    pairs_array = []
    for num in num_array:
        if (k - num) in num_array:
            pairs_array.append((num, (k - num)))
    return pairs_array


result = find_pairs([0, 14, 0, 4, 7, 8, 3, 5, 7], 11)
print(result)