unix - Taking a file list using os.system(ls -1) and write it in a file in python -

#opening 'newfile' write in  {file_list=open('file_list.txt','w')} #taking list of file have write in file  {list_files = os.system("ls -1 /amxusers7/inf/aimsys/netabp6/all_scripts/voice")} #trying write in newfile  {file_list.writelines(list_files)} 

i getting error:

traceback (most recent call last):   file "testpuneet.py", line 30, in ?  file_list.writelines(list_files)  typeerror: writelines() requires iterable argument 

if using python, might python way:

import os open('file_list.txt','w') file_list:     list_files = os.listdir('/amxusers7/inf/aimsys/netabp6/all_scripts/voice')     file_list.write('\n'.join(list_files))