python 获取另一个.py中变量的值

Question

如:在a.py文件有一个变量a = bool()，b.py去运行a.py，然后我希望能获取a.py运行后a的值，该如何去获取？

Answer 1

Yes, you must declare it before using itglobal a

Answer 2

Oops, the file name and variable name are duplicated.
In b.py, import a
to get the global variables in the a.py file

Answer 3

a.py

a = 1
b = "2"
def f():
    return "function"

b.py

import a
a = a.a
from a import b,f
print(b)
f()