auto save

a.py

+print(6+8/2)
\ No newline at end of file

diy.py

@@ -5,3 +5,9 @@ filel2 = open(r'c:\Users\PC\Desktop\book.txt','a',encoding='utf-8')
 filel2.write('小丽：11本\n')
 filel2.write('小丽：11本\n')
 filel2.write('李文：9本\n')
 filel2.write('李文：9本\n')
 filel2.write('张伟：16本\n')
 filel2.write('张伟：16本\n')
+filel1.close()
+filel2.close()
+filel3 = open(r'c:\Users\PC\Desktop\book.txt','r',encoding='utf-8')
+a = filel3.read()
+filel3.close()
+print(a)
\ No newline at end of file