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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.
本章包含以下模块的文档：
- 8.1. datetime — 基本的日期和时间类型
- 8.2. calendar — 日历相关函数
- 8.3. collections — 容器数据类型
- 8.4. collections.abc — 容器的抽象基类
- 8.5. heapq — 堆队列算法
- 8.6. bisect — 数组二分查找算法
- 8.7. array — 高效的数值数组
- 8.8. weakref — 弱引用
- 8.9. types — 动态类型创建和内置类型名称
- 8.10. copy — 浅层 (shallow) 和深层 (deep) 复制操作
- 8.11. pprint — 数据美化输出
- 8.12. reprlib — 另一种 repr() 实现
- 8.13. enum — 枚举类型支持
