sftp_si.py 文件源码

def open(self, path, flags, attr):
        """
        Open a file on the server and create a handle for future operations
        on that file.  On success, a new object subclassed from `.SFTPHandle`
        should be returned.  This handle will be used for future operations
        on the file (read, write, etc).  On failure, an error code such as
        `.SFTP_PERMISSION_DENIED` should be returned.

        ``flags`` contains the requested mode for opening (read-only,
        write-append, etc) as a bitset of flags from the ``os`` module:

            - ``os.O_RDONLY``
            - ``os.O_WRONLY``
            - ``os.O_RDWR``
            - ``os.O_APPEND``
            - ``os.O_CREAT``
            - ``os.O_TRUNC``
            - ``os.O_EXCL``

        (One of ``os.O_RDONLY``, ``os.O_WRONLY``, or ``os.O_RDWR`` will always
        be set.)

        The ``attr`` object contains requested attributes of the file if it
        has to be created.  Some or all attribute fields may be missing if
        the client didn't specify them.

        .. note:: The SFTP protocol defines all files to be in "binary" mode.
            There is no equivalent to Python's "text" mode.

        :param str path:
            the requested path (relative or absolute) of the file to be opened.
        :param int flags:
            flags or'd together from the ``os`` module indicating the requested
            mode for opening the file.
        :param .SFTPAttributes attr:
            requested attributes of the file if it is newly created.
        :return: a new `.SFTPHandle` or error code.
        """
        return SFTP_OP_UNSUPPORTED