auto save

diy.py

 # 写入同学们的捐赠明细：'小兰：12本'、'小丽：11本'、'李文：9本'、'张伟：16本'
-# with open(r"C:\Users\Administrator\Desktop\test.txt",'w',encoding='utf-8') as file:
-#     file.write('小强：10本\n')
-#     file.write('小明：15本\n')
-# with open(r'C:\Users\Administrator\Desktop\test.txt','r',encoding='utf-8') as file:
-#     a=file.read()  
-#     print(a)
-with open(r'C:\Users\Administrator\Desktop\test.txt','r',encoding='utf-8') as file:
-    for i in file:
-        if '小强：10本' in i:
-            print("找到了") 
\ No newline at end of file
+file=open(r"C:\Users\Administrator\Desktop\test.txt",'w',encoding='utf-8')
+file.write('小兰：12本')
+file.close()
\ No newline at end of file