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'
+#book1=open(r'C:\Users\Administrator\Desktop\book.txt','w',encoding='utf-8')
+#book1.write("'小兰：12本'\n'小丽：11本'\n'李文：9本'\n'张伟：16本\n'")
+#book1.close()
+#book1=open(r'C:\Users\Administrator\Desktop\book.txt','a',encoding='utf-8')
+#book1.write("'小强：12本'\n'李明：15本'")
+#book1.close()
+new_date = ""
+with open(r'C:\Users\Administrator\Desktop\book.txt','w',encoding='utf-8') as file:
+    for i in :
+        if '小强:12本'in file:
+            i=i.replace('小强:12本','小强:13本')
+new_date+=file
+print(new_date)
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