_flush ( self )

The _flush method should always flush the sink and should not be overridden.

attach ( self,  filter )

Attach a filter to this one.

close ( self )

Close the filter. Do an explicit flush first, then close the sink.

detach ( self )

Detach a filter from its sink.

flush ( self )

The flush method can be overridden.

last ( self )

Find the last filter in this chain.

next ( self )

Return the next filter/file-like object in the sequence, or None.

write ( self,  data )

The standard write method; this must be overridden in subclasses.

writelines ( self,  lines )

Standard writelines wrapper.