zlib.ZlibBase 类
不是由 zlib 模块导出的。
它记录在此处,因为它是压缩器/解压缩器类的基类。
这个类继承自 stream.Transform,允许在管道和类似的流操作中使用 zlib 对象。
Not exported by the zlib module. It is documented here because it is the base
class of the compressor/decompressor classes.
This class inherits from stream.Transform, allowing zlib objects to be
used in pipes and similar stream operations.