next()
next() is a Python function in the Built-in Functions category. Retrieves the next item from an iterator. Raises StopIteration if exhausted. The syntax is next(iterator, default=None). Parameters: iterator — an iterator object. Returns: Next item or default. A typical example: it = iter([1,2,3])
next(it) # 1
next(it, None) # 2
next(it, None) # 3
next(it, None) # None (default used). 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.