save project

23.py

+file2=""
+with open(r"C:\Users\qinlp\Documents\test\book.txt","r", encoding="utf-8") as file:
+    for i in file:
+        if "小兰：12本" in i:
+            i=i.replace("小兰：12本","小兰：8848本")
+        print(i)
+        file2=file2+i
+with open(r"C:\Users\qinlp\Documents\test\book.txt","w", encoding="utf-8") as file:
+    file.write(file2)
\ No newline at end of file