save project

jk.py

 username = "python"
 username = "python"
 userpassword = "123456"
 userpassword = "123456"
+i=3 
 while True:
 while True:
-    name = input("请输入用户名")
-    password = input("请输入密码")
-    if name == username and password == userpassword:
+    if i>0:
+    name = input("请输入用户名:")
+    password = input("请输入密码:") 
+    i -=1
+    if name=username and password == userpassword:
         print("登陆成功")
         print("登陆成功")
         break
         break
-    elif name != username:
-        print("用户名不存在，请重新输入")
-    else：
-        print("密码输入有误，请重新输入")
-print("欢迎来到贝尔编程")
+    if name != username:
+        print("用户名不存在,请重新输入！")
+        continue
+    if password != userword:
+        print("密码输入有误，请重新输入！)
+    else:
+        print("你的账户已被锁定")
+        exit()
+print("欢迎来到贝尔编程！")
+