=题目一=
input=333
def func():
input=444
func()
print(input)
333
=题目二===
def func():
print(x)
x=111
func()
111
=题目三=
x=1
def func():
print(x)
def foo():
x=222
func()
foo()
1
=题目四=
input=333
def func():
input=444
func()
print(input)
333
=题目五=
x=111
def func():
print(x) #
x=222
func()
报错
UnboundLocalError: local variable 'x' referenced before assignment
=题目六=
x=111
def foo():
print(x,)
def bar():
print(x)
foo()
bar()
111
111
=题目七=
x=1
def func2():
func1()
x=2
def func1():
print(x)
x=3
func2()
3
=题目八=
1.如下全局变量记录了当前登录用户,编写登录功能,一旦用户登录成功,则将全局变量赋值为当前登录的用户名
login_user=None
login = None
name = 'yan'
password = '123'
def user_login():
inp_user = input('请输入账号:').strip()
inp_pwd = input('请输入密码密码:').strip()
if inp_user == name and inp_pwd == password:
print("登录成功")
global login
login = inp_user
else:
print("登录失败")
user_login()
print(login)
2.针对之前编写的查询余额的功能,添加额外的逻辑:如果用户没有登录,则先执行登录功能