code: def _random_body(zipped: bool = False) -> bytes:
      if zipped:
          data = io.BytesIO()
          with zipfile.ZipFile(data, mode="w") as z:
              z.writestr("test.txt", "no real weights in here :)")
          data.seek(0)
          return data.getvalue()
      else:
          raw_body = os.urandom(1024)
          return raw_body
  
file_path: foolbox/tests/test_fetch_weights.py
imports: from foolbox.zoo import fetch_weights
  from foolbox.zoo.common import home_directory_path, sha256_hash
  from foolbox.zoo.weights_fetcher import FOLDER
  import os
  import pytest
  import shutil
  import responses
  import io
  import zipfile
label_desc: Use image node_id 4 for calling a global function with example usage: _random_body(zipped) and returns: data, raw_body