code: def _extract(src_file, dst_dir="."):
      cur_dir = os.getcwd()
      os.chdir(dst_dir)
      try:
          with tarfile.open(src_file, "r:gz") as f:
              f.extractall()
      finally:
          os.chdir(cur_dir)
  
imports: import hashlib
  import logging
  import numpy
  import os
  import pandas
  import tarfile
  import tempfile
  import six
  import shutil
  from .core import PATH_TYPES, fspath
label_desc: Use image node_id 1 for calling a global function with example usage: _extract(src_file, dst_dir) without return types