Use and usefulness of the as syntax

[candide]

Le 12/11/2011 13:29, Arnaud Delobelle a écrit :

>> -- The second case seems to be rather widespread and causes math attribute
>> to be private but I don't figure out why this matters.
>
> This way math doesn't get bound in the global namespace when doing
> "from module import *"
>


To contextualize more, I guess you are referring to the following 
situation :



# a.py
import math as _math


# b.py
from a import *

print _math.sin(0)       # raise a NameError
print math.sin(0)        # raise a NameError



so the as syntax is also seful for hiding name, isn'it ?