str() for containers

[Leif K-Brooks]

George Sakkis wrote:
> I find the string representation behaviour of builtin containers
> (tuples,lists,dicts) unintuitive in that they don't call recursively str()
> on their contents (e.g. as in Java) :

They use repr(), not str():

 >>> class Foo(object):
...     def __repr__(self):
...             return 'foo'
...
 >>> print Foo()
foo
 >>> print [Foo()]
[foo]