save project

diy.py

@@ -2,7 +2,12 @@
 #SB=open(r"C:\Users\Administrator\Desktop\111.txt","w",encoding="utf-8")
 #SB.write('小兰：12本')
 #SB.close()
+sb=''
 with open(r"C:\Users\Administrator\Desktop\111.txt","r",encoding="utf-8") as SB:
     for i in SB:
         if '小兰：12本' in i:
-            print("哟")
\ No newline at end of file
+            i=i.replace( '小兰：12本', '小兰：10本')
+        sb+=i
+with open(r"C:\Users\Administrator\Desktop\111.txt","w",encoding="utf-8") as SB:
+    SB.write(sb)    
+        
\ No newline at end of file