save project

diy.py

@@ -13,6 +13,6 @@ file1.close()
 # file.close()
 # file.close()
 
 
 # 第二种
 # 第二种
- with open(r'C:\Users\Administrator\Desktop\book.txt','w',encoding='utf-8') as file:
+ with open(r'C:\Users\Administrator\Desktop\book.txt','a',encoding='utf-8') as file:
     file.write('小强:10本\n')
     file.write('小强:10本\n')
     file.write('李明:15本\n')
     file.write('李明:15本\n')
\ No newline at end of file