save project

diy.py

@@ -2,6 +2,13 @@
 files=open(r"c:\Users\Admin\Desktop\test.txt",'w',encoding='utf-8')
 files.write('小兰：12本,小丽：11本,李文：9本,张伟：16本')
 files.close()
-with open(r"c:\Users\Admin\Desktop\test.txt",'r',encoding='utf-8')as files
+
+new_files=''
+with open(r"c:\Users\Admin\Desktop\test.txt",'r',encoding='utf-8')as files:
    a=files.read()
-   print(a)
\ No newline at end of file
+   # print(a)
+   if '小兰：12本' in a:
+      a=a.replace('小兰：12本','小兰：15本')
+   new_files=new_files+a
+with open(r"c:\Users\Admin\Desktop\test.txt",'w',encoding='utf-8')as files:
+    files.write(new_files)