def replace_object(rdf, fromuri, touri, predicate=None):
    """Replace all occurrences of fromuri as object with touri in the given
    model.

    If touri=None, will delete all occurrences of fromuri instead.
    If touri is a list or tuple of URIRef, all values will be inserted.
    If predicate is given, modify only triples with the given predicate.

    """
    if fromuri == touri:
        return
    for s, p in rdf.subject_predicates(fromuri):
        if predicate is not None and p != predicate:
            continue
        rdf.remove((s, p, fromuri))
        if touri is not None:
            if not isinstance(touri, (list, tuple)):
                touri = [touri]
            for uri in touri:
                rdf.add((s, p, uri))
def replace_object ( rdf , fromuri , touri , predicate = None ) : if fromuri == touri : return for s , p in rdf . subject_predicates ( fromuri ) : if predicate is not None and p != predicate : continue rdf . remove ( ( s , p , fromuri ) ) if touri is not None : if not isinstance ( touri , ( list , tuple ) ) : touri = [ touri ] for uri in touri : rdf . add ( ( s , p , uri ) )
Replace all occurrences of fromuri as object with touri in the given
    model.

    If touri=None, will delete all occurrences of fromuri instead.
    If touri is a list or tuple of URIRef, all values will be inserted.
    If predicate is given, modify only triples with the given predicate.