save project

diy2.py

 username = "python"
 username = "python"
 userpassword = "123456"
 userpassword = "123456"
-    
-    
-print("欢迎来到贝尔编程!")                                                                        while True:
-                            name = input("请输入用户名:")
-                                                                                password = input("请输入密码:")
-                                                                                if name!=username:
-                                                                                    print("输入的账号有误！")
-                                                                                    continue
-                                                                                if password!=userpassword:
-                                                                                    print("输入的密码有误！")
-                                                                                if name == username and password == userpassword:
-                                                                                    print("登录成功!")
-                                                                                    break
+i=3
+while True:
+    if i>0:
+        name = input("请输入用户名:")
+        password = input("请输入密码:")
+        if name!=username:
+            print("输入的账号不存在，请重新输入！")
+            i-=1
+            continue
+        if password!=userpassword:
+            print("输入的密码有误！")
+            i-=1
+        if name == username and password == userpassword:
\ No newline at end of file
+            print("登录成功!")
+            break
+    else:
+        print("已锁定！")
+        exit()    
+print("欢迎来到贝尔编程!")
\ No newline at end of file