Python has the additional problem of being highly dynamic, though!

In C++'s case, the transformation tool has much more information, so more things are possible to do.

E.g. let's take the ".erase" case from the article. In python, a method

    def foo(bar):
        bar.remove(baz)

can't simply change "remove" to "erase", because it has no idea what type "bar" has.

A C++ tool sees

    void foo(std::list<sometype>& baz)

and can then safely change "remove" to "erase".