save project

jhg.py

-filel=open(r'C:\Users\Administrator\Desktop\book.txt','w',encoding='utf-8')
-filel.write('小兰:12')
-filel.write('小丽:11')
-filel.write('李文:9')
-filel.write('张伟:16')
+#file1=open(r'C:\Users\Administrator\Desktop\book.txt','w',encoding='utf-8')
+#file1.write('小兰:12')
+#file1.write('小丽:11')
+#file1.write('李文:9')
+#file1.write('张伟:16')
+#file1.close()
+with open(r'C:\Users\Administrator\Desktop\book.txt','a',encoding='utf-8') as file1:
+    file1.write('小强:12\n')
+    file1.write('李明:15\n')
\ No newline at end of file