save project

diy.py

@@ -2,4 +2,6 @@
 file1=open(r'D:\Users\CM\Desktop\book.txt','W',encoding='utf-16')
 file1.write("小兰：12本\n")
 with open(r'D:\Users\CM\Desktop\book.txt','W',encoding='utf-16') as file:
-    file1.write("小兰：12本\n")
\ No newline at end of file
+    for data in file:
+        if '小兰：12本'in data:
+            print(小兰)
\ No newline at end of file