auto save

1.py

+i=10000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
+username="python"
+userpassword="12345678900000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+while True：
+    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("登录成功")
+            break
+        elif name != username:
+            print("用户名输入错误,请重新输入！")
+            continue
+        else:
+        print("密码输入错误,请重新输入！")
+print("欢迎来到贝尔编程")
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