name='lhf'
def yangjian():global namename='东方今典'print('我要',name)
def shizhengwen ():global namename='sssssss'print('我要',name)
yangjian()
shizhengwen()

name='lhf'
def yangjian():global namename='东方今典'print('我要',name)
def shizhengwen ():print('我要',name)shizhengwen()yangjian()

name='产品经理'
def yangjian():global name  #已经声明name=产品经理 是全局变量print('我要搞',name)name='小东北'  #修改全局变量为小东北print('我要搞',name)
def shizhengwen ():name='史政文'print('我要搞',name)
yangjian()
shizhengwen()#输出结果：
#我要搞 产品经理
#我要搞 小东北
#我要搞 史政文
#如果函数的内容里面没有global关键字，优先读取里面的的局部变量，如果没有局部变量则只能读取全局变量。而且无法对全局变量进行赋值操作（如：name='史珍香'），但是对于可变对象（如列表），则可以对其内部元素进行操作，如（.append）
#如果函数里面有global关键字，那么后面的name本质上就是全局变量，可以读取，可以赋值

name=['产品经理','廖博士']
def qupengfei():name.append('田振龙')print('我要搞',name)
qupengfei()

name='海风'
def huangwei():name='黄伟'print(name)def liuyang ():name='刘洋'print(name)def nulige():name='沪指花'print(name)print(name)nulige()liuyang()print(name)huangwei()#输出结果：
#黄伟
#刘洋
#刘洋
#沪指花
#黄伟

name='刚娘'
def weihou():name='陈卓'def weiweihou():global namename='冷静'weiweihou()print(name)
print(name)
weihou()
print(name)

name='刚娘'
def weihou():name='陈卓'def weiweihou():nonlocal  name  ####name='冷静'weiweihou()print(name)
print(name)
weihou()
print(name)

name='alex'
def change_name():global namename='lhf'print(name)#输出结果：输出不了结果，但是不报错

name='alex'
def change_name():global namename='lhf'print(name)change_name()#输出结果：lhf

name='alex'
def change_name():global namename='lhf'print(name)def foo():name='wu'print(name)foo()change_name()#输出结果：lhf
#         wu

name='alex'
def change_name():global namename='lhf'print(name)def foo():# name='wu'print(name)foo()change_name()#输出结果：lhf
#         lhf

name='alex'
def change_name():# global name# name='lhf'# print(name)def foo():# name='wu'print(name)foo()change_name()#输出结果：alex

name='alex'
def change_name():# global name# name='lhf'# print(name)name='aaa'def foo():# name='wu'print(name)foo()change_name()#输出结果：aaa

name='alex'
def change_name():# global name# name='lhf'# print(name)name='aaa'def foo():# name='wu'
        nonlocal nameprint(name)foo()change_name()#输出结果：aaa

name='alex'
def change_name():# global name# name='lhf'# print(name)name='aaa'def foo():# name='wu'
        nonlocal namename='bbb'print(name)foo()change_name()#输出结果：bbb

name='alex'
def change_name():# global name# name='lhf'# print(name)name='aaa'def foo():# name='wu'
        nonlocal namename='bbb'print(name)foo()print(name)change_name()#输出结果：bbb
#        bbb