save project

diy.py

+file1=open(r'd:\test.txt','a',encoding='utf-8')
+file1.write("小兰，12本\n")
+file1.close()
+
+file1=open(r'd:\test.txt','r',encoding='utf-8')
+for data in file1:
+    if "小兰，12本" in data:
+        print("数据在文件里")
\ No newline at end of file