def string_to_pyll()

in scripts/vw-hyperopt.py [0:0]

• 38 lines of code
• 12 McCabe index (conditional complexity)

    def string_to_pyll(self):
        line = shlex.split(self.command)

        algorithms = ["sgd"]
        for arg in line:
            arg, value = arg.split("=")
            if arg == "--algorithms":
                algorithms = set(self.range_pattern.findall(value)[0].split(","))
                if tuple(self.distr_pattern.findall(value)) not in {(), ("O",)}:
                    raise ValueError(
                        (
                            "Distribution options are prohibited for --algorithms flag. "
                            "Simply list the algorithms instead (like --algorithms=ftrl,sgd)"
                        )
                    )
                elif self.distr_pattern.findall(value) == ["O"]:
                    algorithms.add("sgd")

                for algo in algorithms:
                    if algo not in self.algorithm_metadata:
                        raise NotImplementedError(
                            ("%s algorithm is not found. " "Supported algorithms by now are %s")
                            % (algo, str(self.algorithm_metadata.keys()))
                        )
                break

        self.space = {
            algo: {"type": algo, "argument": self.algorithm_metadata[algo]["arg"]}
            for algo in algorithms
        }
        for algo in algorithms:
            for arg in line:
                arg, value = arg.split("=")
                if arg == "--algorithms":
                    continue
                if arg not in self.algorithm_metadata[algo]["prohibited_flags"]:
                    distrib = self._process_vw_argument(arg, value, algo)
                    self.space[algo][arg] = distrib
                else:
                    pass
        self.space = hp.choice("algorithm", self.space.values())