Question

3.2. 一级目录

dir/a.py
dir/__init__.py
test.py

neo@MacBook-Pro-Neo ~/workspace/devops % cat dir/a.py 
def say():
    print("hello")		
    
neo@MacBook-Pro-Neo ~/workspace/devops % cat test.py 
from dir import a
a.say()

neo@MacBook-Pro-Neo ~/workspace/devops % python3 test.py 
hello