code: def parse_spec(self):
          
          recruiters = []
          spec = get_config().get("recruiters")
          for match in self.SPEC_RE.finditer(spec):
              name = match.group(1)
              count = int(match.group(2))
              recruiters.append((name, count))
          return recruiters
docs: Parse the specification of how to recruit participants.
  
          Example: recruiters = bots: 5, mturk: 1