python：在相对进口中不允许 * 的原因是什么？

Question

What's the rationale behind not allowing * in relative imports? eg

from ..new_tool import *

or doing a relative import directly:

import ..new_tool

Answer 1

The reason the latter is prohibited is that ..new_tool is not usable in an expression (PEP 328) :

The reason import.foo is prohibited is because after

 import XXX.YYY.ZZZ

then XXX.YYY.ZZZ is usable in an expression. But

 .moduleY

is not usable in an expression.

Since * -imports should only ever be a quick hack while in development, I suspect the functionality for relative * -imports was left out because it's not necessary.