code: def write_folder_corpus_to_file(corpus, writer):
      """
      Merge content of a folder into a single text file
  
      Args:
          corpus: A folder containing text files (String)
          writer: A file writer
      """
      for filename in os.listdir(corpus):
          try:
              file_path = str(path.join(corpus, filename))
              with open(file_path, "r", encoding="utf-8") as f:
                  lines = f.readlines()
                  writer.writelines(lines)
          except Exception as e:
              logger.error(
                  "Error: %s. skipping file: %s", str(e), str(filename)
              )
  
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import argparse
  import csv
  import logging
  import os
  import sys
  from multiprocessing import Pool
  from os import makedirs, path
  from nlp_architect import LIBRARY_OUT
  from nlp_architect.utils.embedding import FasttextEmbeddingsModel
  from nlp_architect.utils.io import validate_existing_directory
  from nlp_architect.utils.text import SpacyInstance
  from .np_scorer import NPScorer
label_desc: Use image node_id 7 for calling a global function with example usage: write_folder_corpus_to_file(corpus, writer) without return types