auto save

diy2.py

 username = "python"
 username = "python"
 userpassword = "123456"
 userpassword = "123456"
-i=3
 while True:
 while True:
-    if i>0:
-        name = input("请输入用户名:")
-        password = input("请输入密码:")
-        
-        i-=1
-        print("你还有"+str(i)+"次机会")
-
-        if name == username and password == userpassword:
-            print("登录成功!")
-            break
-        if name != username:
-            print("用户名错误")
-            continue
-        if password != userpassword:
-            print("密码错误")
-        
-    else:
-        print("账号已锁定")
-        exit()
+    name = input("请输入用户名:")
+    password = input("请输入密码:")
+    if name == username and password == userpassword:
+        print("登录成功!")
+        break
+    if name != username:
+        print("用户名错误")
+    if password != userpassword:
+        print("密码错误")
+    if name != username and password != userpassword:
+        print("用户名，密码错误")
 print("欢迎来到贝尔编程!")
 print("欢迎来到贝尔编程!")
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