save project

diy.py

+new_data''
 with open(r'C:\Users\Administrator\Desktop\test.txt','a',encoding = 'utf-8') as file1:
     for data in file1:
-        if '小强：10本\n' in data:
-            print('数据在文件中')
-        else:
-            print('数据不在文件中')
\ No newline at end of file
+        if '小强：10本' in data:
+            data=data.replace('小强：10本','小强：11本')
+        new_data +=data
\ No newline at end of file