Data Compression and Archiving

The modules described in this chapter support data compression with the zlib, gzip, bzip2 and lzma algorithms, and the creation of ZIP- and tar-format archives. See also Archiving operations provided by the shutil module.

• zlib --- Compression compatible with gzip
• gzip --- Support for gzip files
  • Examples of usage
  • Command Line Interface
    • Command line options
• bz2 --- Support for bzip2 compression
  • (De)compression of files
  • Incremental (de)compression
  • One-shot (de)compression
  • Examples of usage
• lzma --- Compression using the LZMA algorithm
  • Reading and writing compressed files
  • Compressing and decompressing data in memory
  • Miscellaneous
  • Specifying custom filter chains
  • Examples
• zipfile --- Work with ZIP archives
  • ZipFile Objects
  • Path Objects
  • PyZipFile Objects
  • ZipInfo Objects
  • Command-Line Interface
    • Command-line options
  • Decompression pitfalls
    • From file itself
    • File System limitations
    • Resources limitations
    • Interruption
    • Default behaviors of extraction
• tarfile --- Read and write tar archive files
  • TarFile Objects
  • TarInfo Objects
  • Extraction filters
    • Default named filters
    • Filter errors
    • Hints for further verification
    • Supporting older Python versions
    • Stateful extraction filter example
  • Command-Line Interface
    • Command-line options
  • Examples
    • Reading examples
    • Writing examples
  • Supported tar formats
  • Unicode issues