3None

"3None" typically refers to a notation used in programming, especially in Python, indicating that a variable or function technically has "no value" or "null." It is represented by the keyword `None`. Think of it as a placeholder meaning "nothing here" or "not set." For example, if a function doesn't return a specific value, it automatically returns `None`. It helps programmers manage and check whether a variable has been assigned meaningful data or remains empty. Overall, `None` is a way to explicitly indicate the absence of a value in a program.