Foreword

The difference between the python nonlocal keyword and the global keyword

Table of Contents Title

• Foreword
• a.global keywords
• 2.nonlocal keywords
• Summary

1.global keywords

Global keyword, the value of a globally modifiable variable

2.nonlocal keywords

The free keyword, which identifies a variable as a free variable, can assign new values ​​to immutable types, but is used in closures.

def ceshi():count = 1def ceshi_2(value):nonlocal countcount += 1total = valueprint('ceshi_2:',count)return countprint('ceshi:',count)return ceshi_2a = ceshi()print(a(10))print(ceshi())>>>> ceshi: 1>>>> ceshi_2: 2>>>> 2

Summary