save project

swim.py

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