Carl Banks <pavlovevide...@gmail.com> writes: > > The criticism is very valid. Some languages do support immutable > > variables (e.g. "final" declarations in Java, "const" in C++, or > > universal immutability in pure functional languages) and they do so > > precisely for the purpose of taming the chaos of uncontrolled > > mutation. It would be great if Python also supported immutability. > > I don't think what you said (which is fine) makes his criticism valid, > unless you also suggest that all objects should be immutable.
It would be enough to have a way to make specific objects and instance attributes immutable. > If any objects are mutable, you have to be prepared for objects to > mutated outside the initializer. Sure, but why have mutable objects all over the place? And, why always have attributes visible at all, outside the class definition? The approach in C++ and Java is to have public and private instance variables, where the private ones are visible only in the class methods. -- http://mail.python.org/mailman/listinfo/python-list
