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
+#file1 = open(r'C:\Users\Administrator\Desktop\book.txt','w',encoding = 'utf-8')
+#file1.write('iusdyfhcsiua')
+#file1.write('牛马')
+#file1.close()
+
+#with open(r'C:\Users\Administrator\Desktop\book1.txt','w',encoding = 'utf-8') as file:
+    #file.write('小强，10本\n')
+    #file.write('打骂毛锦淇''，250本\n')
+
+
+with open(r'C:\Users\Administrator\Desktop\book1.txt','r',encoding = 'utf-8') as file:
+    for data in file:
+        if '12345' in data: 
+            print("文件中有")
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