save project

Untitled-1.py.py

+file1=open(r'C:\新建文件夹\ book.txt','w',encoding='utf-8')
 
-with open(r'C:\新建文件夹\ book.txt','a',encoding='utf-8') as file：
-    file.write('小强：12本\n')
\ No newline at end of file
+with open(r'C:\新建文件夹\ book.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')
\ No newline at end of file