input=333 def func(): input=444 func() print(input)
def func(): print(x) x=111 func()
x=1 def func(): print(x) def foo(): x=222 func() foo()
input=111 def f1(): def f2(): # input=333 print(input) input=222 f2() f1()
x=111 def func(): print(x) # x=222 func()
x=111 def foo(): print(x,) def bar(): print(x) foo() bar()
x=1 def func2(): func1() x=2 def func1(): print(x) x=3 func2()
# 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_user=None def users(file,user_into,pas): with open(file, mode='rt', encoding='utf-8') as f1: for line in f1: user, word = line.strip().split(':') if user_into == user and pas == word: print('登录成功!') global login_user login_user=user_into else: print('登录失败') users('dbs.txt','tank','123') print(login_user)
# 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
def query(user): dic = {} with open('query','r',encoding='utf-8') as f: for line in f: name,money = line.strip().split(':') dic[name] = money # 用户是否已经登陆 if not log_dic.get(user): print('请先登录') login(user) return f'{user},你的余额为{dic[user]}' username = input('your name:') res1 = query(username) print(res1)