save project

diy.py

@@ -4,7 +4,10 @@
 #file1.write("李文：9本")
 #file1.write("张伟：16本")
 #file1.close()
+new_data=""
 with open(r'C:\Users\Administrator\Desktop\text.txt','r',encoding='utf-8')as file1:
     for data in file1:
         if '刘强：15本' in data:
-            print("yes")
\ No newline at end of file
+            data.replace("刘强：15本","刘强：10本")
+        new_data=data
+        print(new_data)
\ No newline at end of file