auto save

diy2.py

+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!")
+        break
+    if name != username:
+        print("× name ×")
+        continue
+    if password != userpassword:  
+        print("× password ×")  
+print("We Co To Be Co !")
\ No newline at end of file

jj.py

+s="nkjxsmswnjnmx"
+print(s[1:4])
+print(s[-2:])
+for i in range(len(s))
+    print(s[i])
+import r
\ No newline at end of file