code: def update_lincs_proteins():
      
      url = 'http://lincs.hms.harvard.edu/db/proteins/'
      prot_data = load_lincs_csv(url)
      prot_dict = {d['HMS LINCS ID']: d.copy() for d in prot_data}
      assert len(prot_dict) == len(prot_data), "We lost data."
      fname = os.path.join(path, 'lincs_proteins.json')
      with open(fname, 'w') as fh:
          json.dump(prot_dict, fh, indent=1)
docs: Load the csv of LINCS protein metadata into a dict.
  
      Produces a dict keyed by HMS LINCS protein ids, with the metadata
      contained in a dict of row values keyed by the column headers extracted
      from the csv.