Kattowi (Bag)

class mochila.Bag(iterable=())

A Bag is a collection of objects. The order in which the appear in the collection is irrelevant and the same object can appear multiple times.

A Bag behaves as the Python built-in list type, without the index access capabilities. Hence, a bag is the most basic implementation of an iterable.

Bags can be constructed using the type constructor Bag() or Bag(iterable). The constructor builds a Bag whose items are taken from iterable. If iterable is not specified, a new empty Bag is returned.

Parameters:iterable – An iterable from which items are taken to build the Bag.

Bag provides the following additional methods:

add(value)

Add an element.

clear() → None -- remove all items from S

copy()

Create a copy of the Bag.

count(value) → integer -- return number of occurrences of value

discard(value)

Remove an element. Do not raise an exception if absent.

pop()

Pop a random item from the bag and return it. Raise KeyError if empty. :return:

remove(value)

Remove an occurrence of value. Raise ValueError if the value is not present. :param value: :return: