save project

diy.py

-with open(r'C:\Users\dell\Desktop\Book.txt','r',encoding='utf-8') as file1:
+new_datawith
+ with open(r'C:\Users\CM\Desktop\book.txt','r',encoding='utf-8') as file1:
+    
     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')
+        new_data +=data
+with open(r'C:\Users\CM\Desktop\book.txt','w',encoding='utf-8') as file1:
+    file1.write(new_data)
+with open(r'C:\Users\CM\Desktop\book.txt','r',encoding='utf-8') as file1:
+    a=file1.read
+    print(a)
\ No newline at end of file