save project

diy.py

@@ -6,3 +6,9 @@ file.close()
 with open(r"C:\Uses\CM\Desktop\book.txt","a",encoding="utf-8")
     file.write("小强:10本\n")
     file.write("李明:15本\n")
+with open(r"C:\Uses\CM\Desktop\book.txt","r",encoding="utf-8")
+    for data in  file1:
+        if "小强:10本" in data:
+            print("小强数据在文件中")
+        if "小兰:12本" in data:
+            print("小兰数据在文件中")
\ No newline at end of file