def __init__(self, fh, map=None, maxdata=None, ignore_broken_pipe=False, logger=None, **obsopt):
        """Wrap a dispatcher around the passed filehandle.

        If `ignore_broken_pipe` is `True`, an `EPIPE` or `EBADF` error will
        call `handle_close()` instead of `handle_expt()`. Useful when broken
        pipes should be handled quietly.

        `logger` is a logger which will be used to log unusual exceptions;
        otherwise, they will be printed to stderr.
        """
        self.maxdata = maxdata if maxdata else self.pipe_maxdata
        self.__logger = logger
        if ignore_broken_pipe:
            self.__ignore_errno = [EPIPE, EBADF]
        else:
            self.__ignore_errno = []
        self.__filehandle = fh
        # Check for overduplication of the file descriptor and close the extra
        fddup = os.dup(fh.fileno())
        file_dispatcher.__init__(self, fddup, map=map)
        if (self._fileno != fddup): os.close (fddup)
        Observable.__init__(self, **obsopt)
Wrap a dispatcher around the passed filehandle.

        If `ignore_broken_pipe` is `True`, an `EPIPE` or `EBADF` error will
        call `handle_close()` instead of `handle_expt()`. Useful when broken
        pipes should be handled quietly.

        `logger` is a logger which will be used to log unusual exceptions;
        otherwise, they will be printed to stderr.
        
recipes/Python/576967_Asynchronous_pipe_communicatiusing/recipe-576967.py