What main information is stored in the collections module in Python?

The collections module in Python provides alternative data structures that extend the standard data types. The main information it stores and offers includes specialized containers such as:

• namedtuple — a tuple with named fields, convenient for creating simple classes without methods.
• deque — a double-ended queue with efficient addition and removal of elements from both ends.
• Counter — a dictionary for counting hashable objects, useful for counting frequencies.
• OrderedDict — a dictionary that preserves the order of insertion (before Python 3.7, after which the standard dict also preserves order).
• defaultdict — a dictionary with a default value for missing keys.

These structures help write more efficient and readable code when working with data collections.