save project

diy2.py

 username = "python"
 username = "python"
 userpassword = "123456"
 userpassword = "123456"
+I = 3
 name = input("请输入用户名:")
 name = input("请输入用户名:")
 while name!=username:
 while name!=username:
     print("用户名错误")
     print("用户名错误")
+    I-=1
+    print("你还可以登"+str(I)+"次")
+    if I==0:
+        print("不可登入")
+        exit()
     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:")
 while password!=userpassword:
 while password!=userpassword:
     print("密码错误")
     print("密码错误")
+    I-=1
+    print("你还可以登"+str(I)+"次")
+    if I==0:
+        print("不可登入")
+        exit()
     password = input("请输入密码:")   
     password = input("请输入密码:")   
 if name == username and password == userpassword:     
 if name == username and password == userpassword:     
     print("登录成功!")
     print("登录成功!")