enumerate()
enumerate() is a Python function in the Built-in Functions category. Returns an iterator of (index, value) pairs from an iterable. The syntax is enumerate(iterable, start=0). Parameters: iterable — any iterable. Returns: Iterator of (index, value) tuples. A typical example: list(enumerate(["a","b","c"])) # [(0,"a"), (1,"b"), (2,"c")]. A close sibling is print(), which prints objects to the text stream, separated by `sep` and followed by `end`. A close sibling is len(), which returns the length (number of items) of an object. Works with sequences, collections, and strings. A close sibling is range(), which returns an immutable sequence of numbers. Commonly used in for loops. A close sibling is type(), which returns the type of an object, or creates a new type with three arguments. More about this category: Python's built-in functions available without importing — print, len, range, map, and more. For a broader walkthrough, read the Built-in Functions guide.