code: def download_sig(opts, sig, version=None):
      
      code = None
      downloaded = False
      useagent = 'ClamAV/0.101.1 (OS: linux-gnu, ARCH: x86_64, CPU: x86_64)'
      manager = PoolManager(
          headers=make_headers(user_agent=useagent),
          cert_reqs='CERT_REQUIRED',
          ca_certs=certifi.where(),
          timeout=Timeout(connect=10.0, read=60.0)
      )
      if version:
          path = '/%s.cvd' % sig
          filename = os.path.join(opts.workdir, '%s.cvd' % sig)
      else:
          path = '/%s.cdiff' % sig
          filename = os.path.join(opts.workdir, '%s.cdiff' % sig)
      try:
          req = manager.request('GET', 'http://%s%s' % (opts.hostname, path))
      except BaseException as msg:
          error("Request error: %s" % msg)
      data = req.data
      code = req.status
      if req.status == 200:
          with open(filename, 'w') as handle:
              handle.write(data)
          downloaded = os.path.exists(filename)
      return downloaded, code
docs: Download signature from hostname