save project

diy.py

+file = open(r'C:\Users\Administrator\Desktop\book.txt','w',encoding='utf-8')
+file.write('小兰：12本\n')
+file.write('小丽：11本\n')
+file.write('李文：9本\n')
+file.write('张伟：16本\n')
+file.close()
\ No newline at end of file

diy2.py

 username = "python"
 username = "python"
 userpassword = "123456"
 userpassword = "123456"
-i = 3
 while True:
 while True:
-    if i < 1:
-        print("次数用完,登陆失败")
-        break
     name = input("请输入用户名:")
     name = input("请输入用户名:")
     password = input("请输入密码:")
     password = input("请输入密码:")
     if username != name:
     if username != name:
         print("账号错误")
         print("账号错误")
-    elif password != userpassword:
+        continue
+    if password != userpassword:
         print("密码错误")
         print("密码错误")
-    else:
+    if name == username and password == userpassword:
         print("登录成功!")
         print("登录成功!")
         break
         break
-    i -= 1
 print("欢迎来到贝尔编程!")
 print("欢迎来到贝尔编程!")
\ No newline at end of file