def output_to_graphviz(file, namer=_graphviz_default_namer, block=None):
    """ Walk the block and output it in graphviz format to the open file. """
    print(block_to_graphviz_string(block, namer), file=file)
def output_to_graphviz ( file , namer = _graphviz_default_namer , block = None ) : print ( block_to_graphviz_string ( block , namer ) , file = file )
Walk the block and output it in graphviz format to the open file.