Method zstopen

Lib/tarfile.py:2048–2080

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

(cls, name, mode="r", fileobj=None, level=None, options=None,
                zstd_dict=None, **kwargs)

    @classmethod
    def zstopen(cls, name, mode="r", fileobj=None, level=None, options=None,
                zstd_dict=None, **kwargs):
        """Open zstd 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 compression.zstd import ZstdFile, ZstdError
        except ImportError:
            raise CompressionError("compression.zstd module is not available") from None

        fileobj = ZstdFile(
            fileobj or name,
            mode,
            level=level,
            options=options,
            zstd_dict=zstd_dict
        )

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

    # All *open() methods are registered here.
    OPEN_METH = {