save project

diy.py

 with open(r"C:\Users\maku\Desktop\1234.txt","a",encoding="utf")as filel:
     for i in filel:
         if "小兰：12本" in i：
-             print("小兰：12本")
-                   
-       
\ No newline at end of file
+             i=i.replace("小兰12本","小兰20本")
+        new_i +=i
+with open(r"C:\Users\maku\Desktop\1234.txt","a",encoding="utf")as filel:
+    filel.write(new_i)
+with open(r"C:\Users\maku\Desktop\1234.txt","a",encoding="utf")as filel:
+    a=filel.read()
+    print(a)
\ No newline at end of file