auto save

ddf.py

+i=3
+username = "python"    
+userpassword = "123456" 
+while True:
+    if i>0:
+        a=input("输入账号")
+        z=input("输入密码")
+        i-=1
+        if a==username and z==userpassword:
+            print("登陆成功")
+            break
+        if a != username:
+            print("账号错了，给我亖")
+            continue
+        if z != userpassword:
+            print("密码错了，给我亖")
+    else:
+        print("次数没得了，给我亖")
+        exit()
+print("登陆成功")
+

diy2.py

-username = "python"
-userpassword = "123456"
+i=1
+username = "python"    
+userpassword = "123456" 
 while True:
-    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!")
-    print("用户名和密码错误!请重新输入")
-print("欢迎来到贝尔编程!")
\ No newline at end of file
+    if i>0:
+        a=input("输入账号")
+        z=input("输入密码")
+        if a==username and z==userpassword:
+            print("登陆成功")
+            break
+        if a != username:
+            print("账号错了，给我亖")
+            continue
+        if z != userpassword:
+            print("密码错了，给我亖")
+    else:
+        print("次数没得了，给我亖")
+        exit()
+print("登陆成功")
+