Class PacifyFlushWrapper

src/click/utils.py:522–546

This wrapper is used to catch and suppress BrokenPipeErrors resulting from ``.flush()`` being called on broken pipe during the shutdown/final-GC of the Python interpreter. Notably ``.flush()`` is always called on ``sys.stdout`` and ``sys.stderr``. So as to have minimal impact on any

class PacifyFlushWrapper:
    """This wrapper is used to catch and suppress BrokenPipeErrors resulting
    from ``.flush()`` being called on broken pipe during the shutdown/final-GC
    of the Python interpreter. Notably ``.flush()`` is always called on
    ``sys.stdout`` and ``sys.stderr``. So as to have minimal impact on any
    other cleanup code, and the case where the underlying file is not a broken
    pipe, all calls and attributes are proxied.
    """

    wrapped: t.IO[t.Any]

    def __init__(self, wrapped: t.IO[t.Any]) -> None:
        self.wrapped = wrapped

    def flush(self) -> None:
        try:
            self.wrapped.flush()
        except OSError as e:
            import errno

            if e.errno != errno.EPIPE:
                raise

    def __getattr__(self, attr: str) -> t.Any:
        return getattr(self.wrapped, attr)


def _detect_program_name(