save project

diy.py

+new_date = ""
+with open(r"C:\Users\aki\Desktop\book.txt","r",encoding="UTF-8") as file:
+    for i in file:
+        if  "小强:12本" in i:
+            i = i.replace("小强:12本","小强:11")
+            print(i)
+        new_date += i
+with open(r"C:\Users\aki\Desktop\book.txt","w",encoding="UTF-8") as file:
+    file.write(new_date)
\ No newline at end of file