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：1、6本'
-with open(r"C:\Users\dell\Desktop\test.txt",'a',encoding='utf-8') as filel:
-    filel.write('wjja')
\ No newline at end of file
+filel = open(r"C:\Users\dell\Desktop\test.txt",'w',encoding='utf-8')
+filel.write('小兰：12本')
+filel.write('小丽：11本')
+filel.write('李文：9本')
+filel.write('张伟：16本')
+filel.close()
\ No newline at end of file