save project

diy2.py

 username = "python"
 userpasswd="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！')
-        continue  
+        c=c-1
+        continue
     elif password!=userpassword:
         print('密码错误，请重新输入！')
+        c=c-1
         continue
     else:
         break
+        c=c-1
 print('登录成功')