Source code for espnet2.utils.config_argparse

import argparse
from pathlib import Path

import yaml

[docs]class ArgumentParser(argparse.ArgumentParser): """Simple implementation of ArgumentParser supporting config file This class is originated from, but this class is lack of some features that it has. - Not supporting multiple config files - Automatically adding "--config" as an option. - Not supporting any formats other than yaml - Not checking argument type """ def __init__(self, *args, **kwargs): super().__init__(*args, **kwargs) self.add_argument("--config", help="Give config file in yaml format")
[docs] def parse_known_args(self, args=None, namespace=None): # Once parsing for setting from "--config" _args, _ = super().parse_known_args(args, namespace) if _args.config is not None: if not Path(_args.config).exists(): self.error(f"No such file: {_args.config}") with open(_args.config, "r", encoding="utf-8") as f: d = yaml.safe_load(f) if not isinstance(d, dict): self.error("Config file has non dict value: {_args.config}") for key in d: for action in self._actions: if key == action.dest: break else: self.error(f"unrecognized arguments: {key} (from {_args.config})") # NOTE(kamo): Ignore "--config" from a config file # NOTE(kamo): Unlike "configargparse", this module doesn't check type. # i.e. We can set any type value regardless of argument type. self.set_defaults(**d) return super().parse_known_args(args, namespace)