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This module provides a class for reading and writing compressed files,
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container formats, as well as raw compressed data streams.
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        "a" for appending. These can equivalently be given as "rb", "wb",
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        format specifies the container format to use for the file.
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        When opening a file for reading, the *preset* argument is not
        meaningful, and should be omitted. The *filters* argument should
        also be omitted, except when format is FORMAT_RAW (in which case
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        When opening a file for writing, the settings used by the
        compressor can be specified either as a preset compression
        level (with the *preset* argument), or in detail as a custom
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        preset (if provided) should be an integer in the range 0-9,
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