auto save

login_1.py

+name = "python"
+password = "123"
+i = 3
+while True:
+    if i > 0:
+        username = input("请输入账号：")
+        userpassword = input("请输入密码：")
+        i-=1
+        if username == name and userpassword == password:
+            print("登录成功")
+            break
+        if username != name:
+            print("用户名输入错误，请重新输入：")
+            print("还有"+str(i)+"次机会")
+            continue  
+        if userpassword != password:
+            print("密码输入错误，请重新输入：")
+            print("还有"+str(i)+"次机会")
+    else:
+        print("没机会了")
+        exit()
+print("欢迎来到贝尔编程")
\ No newline at end of file