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'
-file1=open(r'C:\Users\123\Desktop\新建文件夹\text.txt','w',encoding='utf-8')
-file1.write('小兰,12\n小李,11\n李文,9\n')
\ No newline at end of file
+#file1=open(r'C:\Users\123\Desktop\新建文件夹\text.txt','w',encoding='utf-8')
+#file1.write('小兰,12\n小李,11\n李文,9\n')
+#file1.close()
+#file1=open(r'C:\Users\123\Desktop\新建文件夹\text.txt','a',encoding='utf-8')
+#file1.write('小强,12\n')
+#file1.write('小强,12\n')
+#file1.close()
+with open(r'C:\Users\123\Desktop\新建文件夹\text.txt','w',encoding='utf-8') as
+file1:
+    file1.write('小兰,12\n小李,11\n李文,9\n')
\ No newline at end of file