Python Library Reference has a nice discussion of the sequence types available within in Python.
python库参考书精辟讨论了Python中的序列类型。
A stream is nothing more than a sequence of bytes that can be read or written using library functions that hide the details of an underlying device from the application.
流只不过是一个可以使用库功能读取或写入的字节序列，库功能向应用程序隐藏了底层设备的细节。
This article puts forward the concept of entity document and discusses the channel, advantage and operation sequence on the network acquisition of the entity document by Chinese library.
提出了实体文献的概念， 并讨论了我国图书馆对实体文献进行网络采访的渠道、优点及操作程序。
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