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\EDZ\Desktop\bell.txt","w",encoding="utf-8")
+# file1.write("小米：10\n")
+# file1.write("明明：20\n")
+# file1.close()
+# file1=open(r"C:\Users\EDZ\Desktop\bell.txt","a",encoding="utf-8")
+# file1.write("小强：34")
+# file1.close()
+new_date=""
+with open(r"C:\Users\EDZ\Desktop\bell.txt","r",encoding="utf-8") as file1:
+    for date in file1:
+        if "好好：34" in date:
+            date=date.replace("好好：34","好好：38")
+        new_date+=date
+with open(r"C:\Users\EDZ\Desktop\bell.txt","w",encoding="utf-8") as file1:
+    file1.write(new_date)