save project

diy.py

 with open(r'C:\Users\yinla\Desktop\test.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
+            data=data.replace('小强：10本','小强：11本')
+        print(data)
\ No newline at end of file