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:\ee\sdx\text.txt","a",encoding="utf-8") as file1:
-    file1.write('小兰：12本')
-    file1.write('小丽：11本')
-    file1.write('李文：9本')
-    file1.write('张伟：16本')
+with open(r"C:\ee\sdx\text.txt","r",encoding="utf-8") as file1:
+   for data in file1:
+       if "小丽：11本" in data:
+           print("数据在文件中")