
    Write a function to verify if a list of user IDs who interacted with a social media post contains any duplicate entries, ensuring each user's interaction is counted only once in the engagement metrics. The function should examine the list of user IDs and determine whether every ID appears exactly once, helping maintain accurate user engagement statistics.
    

    
def all_unique(test_list):
    """
    Write a function to verify if a list of user IDs who interacted with a social media post contains any duplicate entries, ensuring each user's interaction is counted only once in the engagement metrics. The function should examine the list of user IDs and determine whether every ID appears exactly once, helping maintain accurate user engagement statistics.
    

    """
def all_unique(test_list):
    """
    Write a function to verify if a list of user IDs who interacted with a social media post contains any duplicate entries, ensuring each user's interaction is counted only once in the engagement metrics. The function should examine the list of user IDs and determine whether every ID appears exactly once, helping maintain accurate user engagement statistics.
    

    """
    if len(test_list) > len(set(test_list)):
        return False
    return True