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\Administrator\Desktop\test.txt','w',encoding='utf-8')
+#file1.write("小兰：12本、小丽：11本、李文：9本、张伟：16本")
+#file1.close()
+#with open(r'C:\Users\Administrator\Desktop\test.txt','a',encoding='utf-8') as file1:
+    #file1.write("\n小强：10本\n李明：15本\n")  
+with open(r'C:\Users\Administrator\Desktop\test.txt','r',encoding='utf-8') as file1:
+    for data in file1:
+        if "小强：10本" in data:
+            print('数据在文件中')
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