day16 stage summary
Course objective: To summarize and test the knowledge points of the second module "functions and modules" stage, so that students can better grasp the relevant knowledge of this module.
Course summary:
- Knowledge supplement
- Stage summary (mind map)
- exam questions
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1. Knowledge supplement
1.1 nolocal keyword
In the previous course, we learned the global keyword.
name = 'root'
def outer(