Source code for gt4sd.cli.load_arguments_from_dataclass

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"""Functions to facilitate conversion from dataclasses to training descriptions."""

import logging
from dataclasses import _MISSING_TYPE, fields
from typing import Any, Dict, Optional, Type, Union

logger = logging.getLogger(__name__)
logger.addHandler(logging.NullHandler())


[docs]def find_type(input_type: Type) -> Optional[str]: """Convert type class to string. Args: input_type: type to be converted to string. Returns: string of the type or None in case the given type is not supported. """ field_type = None if input_type is str: field_type = "string" elif input_type is int: field_type = "integer" elif input_type is float: field_type = "number" elif input_type is bool: field_type = "boolean" return field_type
[docs]def extract_fields_from_class( dataclass: Type, ) -> Dict[str, Any]: """Extract arguments from dataclass. Args: dataclass: Dataclass to contains the arguments. Returns: Dictionary of the existing arguments including their type, description and default value. """ # assign type and description arg_fields = { field.name: { "type": field.type, "description": field.metadata.get("help", "No help provided"), } for field in fields(dataclass) } # assign default values for field in fields(dataclass): if not isinstance(field.default, _MISSING_TYPE): if field.default is None: field.default = "none" arg_fields[field.name]["default"] = field.default # convert type to str for field_name in arg_fields: field_type = find_type(arg_fields[field_name]["type"]) if field_type: arg_fields[field_name]["type"] = field_type elif ( hasattr(arg_fields[field_name]["type"], "__origin__") and arg_fields[field_name]["type"].__origin__ is Union ): types = [ find_type(type) for type in arg_fields[field_name]["type"].__args__ ] types = [type for type in types if type is not None] if len(types) == 1: arg_fields[field_name]["type"] = types[0] else: raise ValueError(f"{arg_fields[field_name]['type']} not supported") else: # NOTE: not raising since the HF training args might introduce typing inconsistencies # Could be changed once the following is merged: https://github.com/huggingface/transformers/pull/17934 logger.error( f" argument {field_name}: {arg_fields[field_name]['type']} not supported" ) return arg_fields