code: def get_requirements(usr_dir):
      requirements_file = os.path.join(usr_dir, "requirements.txt")
      if not tf.gfile.Exists(requirements_file):
          return []
      with tf.gfile.Open(requirements_file) as f:
          pkg_list = f.readlines()
          return [
              pkg.strip()
              for pkg in pkg_list
              if "tensor2tensor" not in pkg
          ]
  
imports: import datetime
  import os
  import pprint
  import shutil
  import subprocess
  import sys
  import tempfile
  from googleapiclient import discovery
  from oauth2client.client import GoogleCredentials
  from tensor2tensor.data_generators import text_encoder
  from tensor2tensor.layers import common_hparams
  from tensor2tensor.utils import registry
  from tensor2tensor.utils import usr_dir
  import tensorflow.compat.v1
label_desc: Use image node_id 8 for calling a global function with example usage: get_requirements(usr_dir) and returns: list, unknown