code: def combine_files_iter(file_list):
      for file in file_list:
          with open(file, "r") as f:
              for line in f:
                  yield line.split()
  
file_path: deepwalk/deepwalk/walks.py
imports: import logging
  from io import open
  from os import path
  from time import time
  from multiprocessing import cpu_count
  import random
  from concurrent.futures import ProcessPoolExecutor
  from collections import Counter
  from six.moves import zip
  from .None import graph
label_desc: Use image node_id 6 for calling a global function with example usage: combine_files_iter(file_list) without return types