save project

diy.py

@@ -5,10 +5,19 @@
 # file1.write("李文：9本")
 # file1.write("李文：9本")
 # file1.write("张伟：16本")
 # file1.write("张伟：16本")
 # file1.close()
 # file1.close()
+new_data=" "
 with open(r"C:\Users\Administrator\Desktop\book.txt","r",encoding="utf-8")as file1:
 with open(r"C:\Users\Administrator\Desktop\book.txt","r",encoding="utf-8")as file1:
     for data in file1:
     for data in file1:
         if "小兰：12本" in data:
         if "小兰：12本" in data:
-            print("数据在文件中")
+            data=data.replace("小兰:12本","小兰:14本")
+        new_data=new_data+data
+with open(r"C:\Users\Administrator\Desktop\book.txt","w",encoding="utf-8")as file1:
+    file1.write(new_data)
+with open(r"C:\Users\Administrator\Desktop\book.txt","r",encoding="utf-8")as file1:
+    a=file1.read()
+    print(a)
+
+                                
 
 
 
 
     
     
\ No newline at end of file