save project

diy2.py

 username = "python"
 username = "python"
 userpassword = "123456"
 userpassword = "123456"
-while True:
+name = input("请输入用户名:")
+password = input("请输入密码:")
+sum = 1
+while sum < 5:
+    if name != username:
+        print("用户名错误!请重新输入")
+        print("还剩下",5-sum,"次机会")
         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:")
-    if name == username and password == userpassword:
+    elif password != userpassword:
+        print("密码错误!请重新输入")
+        print("还剩下",5-sum,"次机会")
+        if sum < 5:
+            password = input("请输入密码:")
+    else:
         print("登录成功!")
         print("登录成功!")
-    print("用户名和密码错误!请重新输入")
-print("欢迎来到贝尔编程!")
+        break
+        print("欢迎来到贝尔编程!")
\ No newline at end of file
+    sum += 1
\ No newline at end of file