Counter.update()
Counter.update() is a Python method in the Collections Module category. Adds counts from another Counter or iterable. The syntax is Counter.update(iterable). Parameters: iterable or Counter. Returns: None. A typical example: c = Counter("a"); c.update("ab")
c # Counter({"a":2, "b":1}). A close sibling is collections.deque(), which returns a double-ended queue (deque) with efficient O(1) appends/pops from both ends. A close sibling is deque.append(), which adds x to the right side of the deque. A close sibling is deque.appendleft(), which adds x to the left side of the deque. A close sibling is deque.pop(), which removes and returns the rightmost element. Raises IndexError if empty. More about this category: Specialized container datatypes — deque, Counter, defaultdict, namedtuple, OrderedDict. For a broader walkthrough, read the Collections Module guide. Related Collections Module entries: collections.deque(), deque.append(), deque.appendleft(), deque.pop(), deque.popleft(), deque.extend(). This page is part of the free Python Reference documentation covering 978+ functions, methods, and modules with examples and parameter details.