What is the return type of the len() function?

What is the return type of the len() function?

• A. String
• B. Boolean
• C. Integer
• D. List

Answer: (C)

The len() function in Python is designed to return the number of items in an object, which could be a data type such as a string, list, tuple, or dictionary. The return type of this function is always an integer, as it provides a numeric value that represents the count of elements. For example, if you pass a string of length 5 to len(), it will return the integer 5, and if you pass a list containing three elements, it will return the integer 3. This consistent return type allows for straightforward handling of data sizes and is fundamental in various programming tasks, such as iterating over collections and performing conditional checks based on the number of elements.

The len() function in Python is designed to return the number of items in an object, which could be a data type such as a string, list, tuple, or dictionary. The return type of this function is always an integer, as it provides a numeric value that represents the count of elements. For example, if you pass a string of length 5 to len(), it will return the integer 5, and if you pass a list containing three elements, it will return the integer 3. This consistent return type allows for straightforward handling of data sizes and is fundamental in various programming tasks, such as iterating over collections and performing conditional checks based on the number of elements.