A. '\t' B. '\a' C. '\0' D. '\n'
A. split B. insert C. join D. index
A. this is a test hello B. this is a test+hello C. this is a test D. this is a test,hello.
A. make() B. create() C. open() D. file()
A. 只能写入数据 B. 只能读取数据 C. 文件可以不存在 D. 文件必须已经存在
A. My_file.write(book+'\n') B. My_file.write([book+'\n']) C. My_file.writelines(book+'\n') D. My_file.writelines([book+'\n'])
A. 对 B. 错