Finding Target-Sum Pairs in a List

This function takes a list of numbers and a target value, and returns a pair of numbers that sum up to the target value. If no such pair is found, it returns None.

Technology Stack : List, Dictionary

Code Type : Function

Code Difficulty : Intermediate

                
                    
def sum_pairs(numbers, target):
    seen = {}
    for num in numbers:
        if target - num in seen:
            return (target - num, num)
        seen[num] = True
    return None