“从模块导入*”到底是什么意思？

Question

I thought it meant everything in the module. But in tkinter I would have to specifically import things like messagebox, colorchooser and filedialog despite having a "from tkinter import *" command. So exactly what does "import *" mean?

Answer 1

A module can define an __all__ variable: a list containing the names that will be imported when you do from module import * . Anything not in this list will not actually be imported. https://docs.python.org/2/tutorial/modules.html

Answer 2

这只是意味着您以某种方式导入所有（方法，变量等），因此在使用它们时无需为它们加上前缀。

Answer 3

from module import *

This imports all names except those beginning with an underscore (_).

read more: Python modules