auto save

diy.py

@@ -2,8 +2,8 @@
 #file1=open(r'C:\Users\Makcoo-Bellcode\Desktop\book.txt','w',encoding='utf-8')
 #file1.write("小兰：12本\n小丽：11本\n李文：9本\n张伟：16本")
 #file1.close()
-#with open(r'C:\Users\Makcoo-Bellcode\Desktop\book.txt','a',encoding='utf-8')as file:
- #   file.write("小兰：12本\n小丽：11本\n李文：9本\n张伟：16本")
+with open(r'C:\Users\Makcoo-Bellcode\Desktop\book.txt','w',encoding='utf-8')as file:
+    file.write("小强：10本\n小兰：12本\n小丽：11本\n李文：9本\n张伟：16本")
 new_file=''
 with open(r'C:\Users\Makcoo-Bellcode\Desktop\book.txt','r',encoding='utf-8')as file: 
     for data in file:
@@ -13,4 +13,7 @@ with open(r'C:\Users\Makcoo-Bellcode\Desktop\book.txt','r',encoding='utf-8')as f
             data=data.replace('小兰：12本','小兰：14本')
         new_file+=data
 with open(r'C:\Users\Makcoo-Bellcode\Desktop\book.txt','w',encoding='utf-8')as file: 
-    file.write(new_file)
\ No newline at end of file
+    file.write(new_file)
+with open(r'C:\Users\Makcoo-Bellcode\Desktop\book.txt','r',encoding='utf-8')as file: 
+    a=file.read()
+    print(a)
\ No newline at end of file