None (character)

In programming, "None" is a special value used to indicate the absence of a value or that something is undefined. It's similar to saying "nothing" or "no data here." For example, if a function doesn’t return a specific value, it may return "None." It’s distinct from other values like zero or an empty string, as it specifically signifies "no value." "None" helps programmers manage cases where data may be missing or not yet assigned, providing a clear way to handle such situations in code.