save project

diy2.py

 username = "python"
 userpassword = "123456"
+c=3
 while True:
+   
+    if c==0:
+        print('恭喜你机会用完，账户锁定')
+        exit()
+    print('还剩'+str(c)+'次机会')    
+   
+   
     name = input("请输入用户名:")
     password = input("请输入密码:")
     if name!=username:
         print('用户名错误，请重新输入！')
+        c=c-1
         continue
     elif password!=userpassword:
         print('密码错误，请重新输入')
+        c=c-1
         continue
     else:
         break