auto save

Untitled-1.py.py

+username = "zheng"
+userpassword = "245418"
+while True:
+    n = input("请输入用户名:")
+    m = input("请输入密码:")
+    if n == username and m == userpassword:
+        print("登录成功!")
+        break
+    if n != username:
+        input("用户名出错")
+        continue
+    if m !=userpassword:
+        input("密码出错")
+print("欢迎")
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