Class _ZipPkgWriter

src/pptx/opc/serialized.py:217–243

Implements |PhysPkgWriter| interface for a zip-file (.pptx file) OPC package.

class _ZipPkgWriter(_PhysPkgWriter):
    """Implements |PhysPkgWriter| interface for a zip-file (.pptx file) OPC package."""

    def __init__(self, pkg_file: str | IO[bytes]):
        self._pkg_file = pkg_file

    def __enter__(self) -> _ZipPkgWriter:
        """Enable use as a context-manager. Opening zip for writing happens here."""
        return self

    def __exit__(self, *exc: list[Any]) -> None:
        """Close the zip archive on exit from context.

        Closing flushes any pending physical writes and releasing any resources it's using.
        """
        self._zipf.close()

    def write(self, pack_uri: PackURI, blob: bytes) -> None:
        """Write `blob` to zip package with membername corresponding to `pack_uri`."""
        self._zipf.writestr(pack_uri.membername, blob)

    @lazyproperty
    def _zipf(self) -> zipfile.ZipFile:
        """`ZipFile` instance open for writing."""
        return zipfile.ZipFile(
            self._pkg_file, "w", compression=zipfile.ZIP_DEFLATED, strict_timestamps=False
        )


class _ContentTypesItem: