save project

diy.py

@@ -4,10 +4,13 @@ sb.write('小兰：12本、小丽：11本、李文：9本、张伟：16本')
 sb.close()
 with open(r"C:\Users\Administrator\Desktop\sb.txt","a",encoding="utf-8") as sb1:
     sb1.write("sbsbsbssbsbsbsbbbsbsbsbsbsbsbsbbbbsssssbbbbbsss")
+s=""
 with open(r"C:\Users\Administrator\Desktop\sb.txt","r",encoding="utf-8") as sb1:
     for i in sb1:
         if "sb" in i:
-            print("sb")
-
-        
+            i=i.replace("12","14")
+        s+=i
+with open(r"C:\Users\Administrator\Desktop\sb.txt","w",encoding="utf-8") as sb1: 
+    sb1.write(s) 
+