code: def pdbe_status_code(code):
      
      url = 'http://www.ebi.ac.uk/pdbe/entry-files/download/{0}_1.mmol'.format(code)
      r = requests.head(url=url)
      return r.status_code
docs: Check if a PDB code has structure files on the PDBE site.
  
      Parameters
      ----------
      code : str
          PDB code to check for on PDBE.
  
      Returns
      -------
      status_code : int
          HTTP status code of PDBE url associated with input code.