save project

diy.py

@@ -4,5 +4,9 @@ a.write("小强:12本,李明:15本")
 a.close()
 a.close()
 
 
 
 
-with open(r"C:\Users\EDZ\Desktop\book.txt","a",encoding="utf-8") as a:
-    a.write("小强:12本,李明:15本")  
+#with open(r"C:\Users\EDZ\Desktop\book.txt","a",encoding="utf-8") as a:
+    #a.write("小强:12本,李明:15本")
\ No newline at end of file
+with open(r"C:\Users\EDZ\Desktop\book.txt","r",encoding="utf-8") as a:
+    for data in a:
+        if "小强:12本" in data:
+            print('数据在文件中')
\ No newline at end of file