请解释Python中的变量作用域以及LEGB规则,并结合代码示例解释其在项目实践中的应用。
时间: 2024-11-20 08:30:46 浏览: 58
在Python编程中,变量作用域是理解程序如何查找变量引用的关键。Python中的变量作用域遵循LEGB规则,即Local(局部作用域)、Enclosing(嵌套作用域)、Global(全局作用域)和Built-in(内置作用域)。了解这一规则对于编写正确和高效的代码至关重要。
参考资源链接:[Learning Python Fifth Edition: 英文原版电子书](https://wenku.csdn.net/doc/1m99mzt4qe?spm=1055.2569.3001.10343)
局部作用域指的是函数内部定义的变量。当函数被调用时,局部变量被创建,并在函数执行完毕后销毁。例如,在函数内部:
```python
def local_scope():
x =
参考资源链接:[Learning Python Fifth Edition: 英文原版电子书](https://wenku.csdn.net/doc/1m99mzt4qe?spm=1055.2569.3001.10343)
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