Method bz2open

Lib/tarfile.py:1992–2017

Open bzip2 compressed tar archive name for reading or writing. Appending is not allowed.

(cls, name, mode="r", fileobj=None, compresslevel=9, **kwargs)

    @classmethod
    def bz2open(cls, name, mode="r", fileobj=None, compresslevel=9, **kwargs):
        """Open bzip2 compressed tar archive name for reading or writing.
           Appending is not allowed.
        """
        if mode not in ("r", "w", "x"):
            raise ValueError("mode must be 'r', 'w' or 'x'")

        try:
            from bz2 import BZ2File
        except ImportError:
            raise CompressionError("bz2 module is not available") from None

        fileobj = BZ2File(fileobj or name, mode, compresslevel=compresslevel)

        try:
            t = cls.taropen(name, mode, fileobj, **kwargs)
        except (OSError, EOFError) as e:
            fileobj.close()
            if mode == 'r':
                raise ReadError("not a bzip2 file") from e
            raise
        except:
            fileobj.close()
            raise
        t._extfileobj = False
        return t

    @classmethod
    def xzopen(cls, name, mode="r", fileobj=None, preset=None, **kwargs):