save project

diy.py

+nem_data=''
 with open(r"C:\Users\XMBC\Desktop\1.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')
+            data=data.replace('小强:10本','小强:11本')
+    nem_data+=data
+with open(r"C:\Users\XMBC\Desktop\1.txt","w",encoding="utf-8") as file1:
+    file1.write(nem_data)
\ No newline at end of file