Python Enumerate Function Enumerate Enumerate is a built-in function of Python. It’s usefulness can not be summarized in a single line. Yet most of the newcomers and even some advanced programmers are unaware of it. It allows us to loop over something and have an automatic counter. The enumerate() method adds counter to an iterable and returns it. The returned object is a enumerate object. You can convert enumerate objects to list and tuple using list() and tuple() method respectively. Python Development