gio.FileOutputStream — Base class for implementing streaming input
| class gio.FileOutputStream(gio.OutputStream): | 
            gio.FileOutputStream
            provides output streams that write their content to a file.
        
            gio.FileOutputStream
            implements gio.Seekable,
            which allows the output stream to jump to arbitrary positions in the file and to truncate
            the file, provided the filesystem of the file supports these operations. In addition to the
            generic gio.Seekable. API,
            gio.FileOutputStream
            has its own API for seeking and positioning. To find the position of a file output stream, use
            gio.Seekable.tell().
            To find out if a file output stream supports seeking, use
            gio.Seekable.can_seek().
            To position a file output stream, use
            gio.Seekable.seek().
            To find out if a file output stream supports truncating, use
            gio.FileOutputStream.can_truncate().
            To truncate a file output stream, use
            gio.Seekable.truncate().
        
    def get_etag()| Returns : | the entity tag for the stream. | 
                The get_etag() method gets the entity tag
                for the file when it has been written. This must be called after the
                stream has been written and closed, as the etag can change while writing.
            
    def query_info(attributes, cancellable=None)| 
 | a file attribute query string. | 
| 
 | optional gio.Cancellableobject,Noneto ignore. | 
| Returns : | a gio.FileInfo,
                    orNoneon error. | 
                The query_info() method queries a file input stream
                the given attributes. This function blocks while querying the stream.
                For the asynchronous (non-blocking) version of this function, see
                gio.FileOutputStream.query_info_async().
                While the stream is blocked, the stream will set the pending flag internally,
                and any other operations on the stream will fail with gio.ERROR_PENDING.
            
Can fail if the stream was already closed (with error being set to gio.ERROR_CLOSED), the stream has pending operations (with error being set to gio.ERROR_PENDING), or if querying info is not supported for the stream's interface (with error being set to gio.ERROR_NOT_SUPPORTED). In all cases of failure, NULL will be returned.
                If cancellable is not None, then the operation can be cancelled by
                triggering the cancellable object from another thread. If the operation was cancelled,
                the error gio.ERROR_CANCELLED will be set, and None will be returned.
            
    def query_info_async(attributes, callback, io_priority=glib.PRIORITY_DEFAULT, cancellable=None, user_data=None)| 
 | a file attribute query string. | 
| 
 | a GAsyncReadyCallback to call when the request is satisfied. | 
| 
 | the Glib Priority Constants of the request. | 
| 
 | optional gio.Cancellableobject,Noneto ignore. | 
| 
 | the data to pass to callback function. | 
                The query_info_async() method queries the stream
                information asynchronously. When the operation is finished callback will be
                called. You can then call
                gio.FileOutputStream.query_info_finish()
                to get the result of the operation.
            
                For the synchronous version of this function, see
                gio.FileOutputStream.query_info().
            
                If cancellable is not None, then the operation can be cancelled
                by triggering the cancellable object from another thread. If the operation was
                cancelled, the error gio.ERROR_CANCELLED will be set
            
    def query_info_finish(result)| 
 | a gio.AsyncResult. | 
| Returns : | a gio.FileInfo,
                    orNoneon error. | 
                The query_info_finish() method finishes an asynchronous
                file append operation started with
                gio.FileOutputStream.query_info_async().