The modules described in this chapter provide a variety of specialized data
types such as dates and times, fixed-type arrays, heap queues, synchronized
queues, and sets.
Python also provides some built-in data types, in particular,
dict, list, set and frozenset, and
tuple. The str class is used to hold
Unicode strings, and the bytes class is used to hold binary data.
The following modules are documented in this chapter:
7.2. codecs — Codec registry and base classes
8.1. datetime — Basic date and time types
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