Python：将foo.bar导入为bar与从foo导入导入

Question

Given that foo.bar is a module, what is the difference between

import foo.bar as bar

and

from foo import bar

I'm particularly interested in what lazy importing of modules does to this.

Note: This is not a duplicate of this question .

Answer 1

In the first code line:

 import foo.bar as bar

Here you are importing bar from foo package but why added as bar means when you need to access any function func in that bar . You have to access like foo.bar.func but when you added as bar you just use

 bar.func

The same to the line from foo import bar just importing the bar