[Python-ideas] Add a feature similar to C++ "using some_namespace"

[Manuel Bärenz]

In C++, the the approach to the namespace problem is having different namespaces that should not contain different definitions of the same name.
Members of a namespace can be accessed explicitly by e.g. calling "std::cout<<  etc." or "using namespace std; cout<<  etc."

I understand Pythons approach to be "objects can be used as namespaces and their attributes are the names they contain". I find this a very beautiful way of solving the issue, but it has a downside, in my opinion, because it lacks the "using" directive from C++.

If the object is a module, we can of course do "from mymodule import spam, eggs". But if it is not a module, this does not work.

Consider for example:

class Spam(object):
     def frobnicate(self):
         self.eggs = self.buy_eggs()
         self.scrambled = self.scramble(self.eggs)
         return self.scrambled>  42

This could be easier to implement and read if we had something like:

class Spam(object):
     def frobnicate(self):
         using self:
             eggs = buy_eggs()
             scrambled = scramble(eggs)
             return scrambled>  42

Of course this opens a lot of conceptual questions like how should this using block behave if self doesn't have an attribute called "eggs", but I think it is worth considering.