auto save

diy4.py

+name="python"
+password="12345"
+times=3
+
+while True:
+    times=times-1
+    if times < 0:
+        print("登陆次数已经超过3次")
+        break
+        
+    username=input("请输入您的账号：")
+    userpassword=input("请输入您的密码")
+
+    
+    if username != name:
+        print("用户名错误")
+        continue
+    if userpassword != password:
+        print("密码错误")
+        continue
+
+
+    print("登陆成功")
+    break
+    
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