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'
+# file=open(r"C:\Users\LENOVO\Desktop\吃屎.txt","w",encoding='utf-8')
+# file.write('小兰：12本\n')
+# file.write('小丽：11本\n'
+# with open(r"C:\Users\LENOVO\Desktop\吃屎.txt","a",encoding='utf-8') as file: 
+#     file.write('老大：吃屎')
+with open(r"C:\Users\LENOVO\Desktop\吃屎.txt","r",encoding='utf-8') as file: 
+    file.replace("小兰：12本","小兰:11本")
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