Tuples with Same Product

def tupleSameProduct(nums: List[int]) -> int:
    products = {}

    for a in nums:
        for b in nums:
            if a == b:
                continue

            if a * b in products:
                products[a * b] += 1
            else:
                products[a * b] = 1

    validTuples = 0

    for c in nums:
        for d in nums:
            if c == d:
                continue

            validTuples += (products[c * d] - 2)

    return validTuples