python 中的全局变量和局部变量

1、全局变量：

def spam():
    #global eggs
    eggs = 'spam'
eggs = 'global'
spam()
print(eggs)

输出：global

2、局部变量：

def spam():
    global eggs
    eggs = 'spam'
eggs = 'global'
spam()
print(eggs)

输出：spam