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called collections.abc, following the pattern used by importlib.abc. For backwards compatibility, the names continue to also be imported into the collections module.
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.. _datatypes:
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**********
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Data Types
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**********
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The modules described in this chapter provide a variety of specialized data
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types such as dates and times, fixed-type arrays, heap queues, synchronized
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queues, and sets.
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Python also provides some built-in data types, in particular,
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:class:`dict`, :class:`list`, :class:`set` and :class:`frozenset`, and
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:class:`tuple`. The :class:`str` class is used to hold
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Unicode strings, and the :class:`bytes` class is used to hold binary data.
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The following modules are documented in this chapter:
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.. toctree::
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datetime.rst
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calendar.rst
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collections.rst
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collections.abc.rst
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heapq.rst
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bisect.rst
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array.rst
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sched.rst
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queue.rst
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weakref.rst
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types.rst
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copy.rst
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pprint.rst
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reprlib.rst
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