13. 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.

• 13.1. zlib — Compression compatible with gzip
  • error
  • adler32()
  • compress()
  • compressobj()
  • crc32()
  • decompress()
  • decompressobj()
  • Compress.compress()
  • Compress.flush()
  • Compress.copy()
  • Decompress.unused_data
  • Decompress.unconsumed_tail
  • Decompress.eof
  • Decompress.decompress()
  • Decompress.flush()
  • Decompress.copy()
  • ZLIB_VERSION
  • ZLIB_RUNTIME_VERSION
• 13.2. gzip — Support for gzip files
  • open()
  • GzipFile
    • GzipFile.peek()
    • GzipFile.mtime
  • compress()
  • decompress()
  • 13.2.1. Examples of usage
• 13.3. bz2 — Support for bzip2 compression
  • 13.3.1. (De)compression of files
    • open()
    • BZ2File
      • BZ2File.peek()
  • 13.3.2. Incremental (de)compression
    • BZ2Compressor
      • BZ2Compressor.compress()
      • BZ2Compressor.flush()
    • BZ2Decompressor
      • BZ2Decompressor.decompress()
      • BZ2Decompressor.eof
      • BZ2Decompressor.unused_data
      • BZ2Decompressor.needs_input
  • 13.3.3. One-shot (de)compression
    • compress()
    • decompress()
• 13.4. lzma — Compression using the LZMA algorithm
  • LZMAError
  • 13.4.1. Reading and writing compressed files
    • open()
    • LZMAFile
      • LZMAFile.peek()
  • 13.4.2. Compressing and decompressing data in memory
    • LZMACompressor
      • LZMACompressor.compress()
      • LZMACompressor.flush()
    • LZMADecompressor
      • LZMADecompressor.decompress()
      • LZMADecompressor.check
      • LZMADecompressor.eof
      • LZMADecompressor.unused_data
      • LZMADecompressor.needs_input
    • compress()
    • decompress()
  • 13.4.3. Miscellaneous
    • is_check_supported()
  • 13.4.4. Specifying custom filter chains
  • 13.4.5. Examples
• 13.5. zipfile — Work with ZIP archives
  • BadZipFile
  • BadZipfile
  • LargeZipFile
  • ZipInfo
  • is_zipfile()
  • ZIP_STORED
  • ZIP_DEFLATED
  • ZIP_BZIP2
  • ZIP_LZMA
  • 13.5.1. ZipFile Objects
    • ZipFile
      • ZipFile.close()
      • ZipFile.getinfo()
      • ZipFile.infolist()
      • ZipFile.namelist()
      • ZipFile.open()
      • ZipFile.extract()
      • ZipFile.extractall()
      • ZipFile.printdir()
      • ZipFile.setpassword()
      • ZipFile.read()
      • ZipFile.testzip()
      • ZipFile.write()
      • ZipFile.writestr()
      • ZipFile.filename
      • ZipFile.debug
      • ZipFile.comment
  • 13.5.2. PyZipFile Objects
    • PyZipFile
      • PyZipFile.writepy()
  • 13.5.3. ZipInfo Objects
    • ZipInfo.from_file()
    • ZipInfo.is_dir()
    • ZipInfo.filename
    • ZipInfo.date_time
    • ZipInfo.compress_type
    • ZipInfo.comment
    • ZipInfo.extra
    • ZipInfo.create_system
    • ZipInfo.create_version
    • ZipInfo.extract_version
    • ZipInfo.reserved
    • ZipInfo.flag_bits
    • ZipInfo.volume
    • ZipInfo.internal_attr
    • ZipInfo.external_attr
    • ZipInfo.header_offset
    • ZipInfo.CRC
    • ZipInfo.compress_size
    • ZipInfo.file_size
  • 13.5.4. Command-Line Interface
    • 13.5.4.1. Command-line options
  • 13.5.5. Decompression pitfalls
    • 13.5.5.1. From file itself
    • 13.5.5.2. File System limitations
    • 13.5.5.3. Resources limitations
    • 13.5.5.4. Interruption
    • 13.5.5.5. Default behaviors of extraction
• 13.6. tarfile — Read and write tar archive files
  • open()
  • TarFile
  • is_tarfile()
  • TarError
  • ReadError
  • CompressionError
  • StreamError
  • ExtractError
  • HeaderError
  • ENCODING
  • USTAR_FORMAT
  • GNU_FORMAT
  • PAX_FORMAT
  • DEFAULT_FORMAT
  • 13.6.1. TarFile Objects
    • TarFile
      • TarFile.open()
      • TarFile.getmember()
      • TarFile.getmembers()
      • TarFile.getnames()
      • TarFile.list()
      • TarFile.next()
      • TarFile.extractall()
      • TarFile.extract()
      • TarFile.extractfile()
      • TarFile.add()
      • TarFile.addfile()
      • TarFile.gettarinfo()
      • TarFile.close()
      • TarFile.pax_headers
  • 13.6.2. TarInfo Objects
    • TarInfo
      • TarInfo.frombuf()
      • TarInfo.fromtarfile()
      • TarInfo.tobuf()
      • TarInfo.name
      • TarInfo.size
      • TarInfo.mtime
      • TarInfo.mode
      • TarInfo.type
      • TarInfo.linkname
      • TarInfo.uid
      • TarInfo.gid
      • TarInfo.uname
      • TarInfo.gname
      • TarInfo.pax_headers
      • TarInfo.isfile()
      • TarInfo.isreg()
      • TarInfo.isdir()
      • TarInfo.issym()
      • TarInfo.islnk()
      • TarInfo.ischr()
      • TarInfo.isblk()
      • TarInfo.isfifo()
      • TarInfo.isdev()
  • 13.6.3. Command-Line Interface
    • 13.6.3.1. Command-line options
  • 13.6.4. Examples
  • 13.6.5. Supported tar formats
  • 13.6.6. Unicode issues