username = 'yjc'
password = '123'
with open("D:\GitHub\python\python\python学习\Python_oldboys14\data\data.txt", "r") as f: #打开文件
dat = f.read() #读取文件
if int(dat) == 3: #判断是用户账号是否被锁定
print('账号已被锁定')
else:
for i in range(1,4):
_username = input('请输入用户名:')
_password = input('请输入密码:')
if _username == username and _password == password:
print('登录成功')
break
elif i == 3:
print('账号已锁定')
data=open("D:\GitHub\python\python\python学习\Python_oldboys14\data\data.txt",'w+') # 写入文件
print(i,file=data) #写入文件
else:
print('账号或密码错误，请重新输入')
print('已输入%s次，剩余'%i,3-i,'次机会')
