如果我在函数内导入模块，变量是否为局部变量？

Question

If I do an import of a module in python 3 inside a function (local scope), will the things imported be local to the function?

Like

def test():
    import math
    s = math.cos(1)
s = math.cos(1)

Answer 1

Yes, the module will be local to the function, at least in the example above(I am using Python 3.6).

Example:

Python 3.6.0 (v3.6.0:41df79263a11, Dec 22 2016, 17:23:13)
[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
def test():
...     import math
...     s = math.cos(1)
...
g = math.cos(1)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
NameError: name 'math' is not defined