Do more imported objects affect performance

[MRAB]

Filip Gruszczyński wrote:
> I have following question: if I use
> 
> from module import *
> 
> instead
> 
> from module import Class
> 
> am I affecting performance of my program? I believe, that all those
> names must be stored somewhere, when they are imported and then
> browsed when one of them is called. So am I putting a lot of "garbage"
> to this storage and make those searches longer?
> 
Importing many (or all) names will take longer than importing a few, but 
you probably won't notice the difference.

You'll also be filling the namespace with a lot of unwanted names.

Will it affect how long it takes to look up a name? No.