code: def resolve_cert_reqs(candidate):
      
      if candidate is None:
          return CERT_NONE
  
      if isinstance(candidate, str):
          res = getattr(ssl, candidate, None)
          if res is None:
              res = getattr(ssl, 'CERT_' + candidate)
          return res
  
      return candidate
docs: Resolves the argument to a numeric constant, which can be passed to
      the wrap_socket function/method from the ssl module.
      Defaults to :data:`ssl.CERT_NONE`.
      If given a string it is assumed to be the name of the constant in the
      :mod:`ssl` module or its abbreviation.
      (So you can specify `REQUIRED` instead of `CERT_REQUIRED`.
      If it's neither `None` nor a string we assume it is already the numeric
      constant which can directly be passed to wrap_socket.