save project

diy2.py

+i=3
 username = "python"
 username = "python"
 userpassword = "123456"
 userpassword = "123456"
 while True:
 while True:
+    print('你有'+str(i)+'次机会')
     name = input("请输入用户名:")
     name = input("请输入用户名:")
     password = input("请输入密码:")
     password = input("请输入密码:")
+    i=i-1
     if name == username and password == userpassword:
     if name == username and password == userpassword:
         print("登录成功!")
         print("登录成功!")
         break
         break
     if name!=username:
     if name!=username:
         print("账号错误")
         print("账号错误")
+        if i==0:
+            input("你没有机会了")
+            exit()
+        continue
     else:
     else:
         print("密码错误")
         print("密码错误")