68 lines
1.8 KiB
Python
68 lines
1.8 KiB
Python
"""TOML file settings source."""
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from __future__ import annotations as _annotations
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import sys
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from pathlib import Path
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from typing import (
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TYPE_CHECKING,
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Any,
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)
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from ..base import ConfigFileSourceMixin, InitSettingsSource
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from ..types import DEFAULT_PATH, PathType
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if TYPE_CHECKING:
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from pydantic_settings.main import BaseSettings
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if sys.version_info >= (3, 11):
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import tomllib
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else:
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tomllib = None
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import tomli
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else:
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tomllib = None
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tomli = None
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def import_toml() -> None:
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global tomli
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global tomllib
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if sys.version_info < (3, 11):
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if tomli is not None:
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return
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try:
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import tomli
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except ImportError as e: # pragma: no cover
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raise ImportError('tomli is not installed, run `pip install pydantic-settings[toml]`') from e
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else:
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if tomllib is not None:
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return
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import tomllib
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class TomlConfigSettingsSource(InitSettingsSource, ConfigFileSourceMixin):
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"""
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A source class that loads variables from a TOML file
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"""
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def __init__(
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self,
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settings_cls: type[BaseSettings],
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toml_file: PathType | None = DEFAULT_PATH,
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deep_merge: bool = False,
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):
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self.toml_file_path = toml_file if toml_file != DEFAULT_PATH else settings_cls.model_config.get('toml_file')
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self.toml_data = self._read_files(self.toml_file_path, deep_merge=deep_merge)
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super().__init__(settings_cls, self.toml_data)
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def _read_file(self, file_path: Path) -> dict[str, Any]:
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import_toml()
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with file_path.open(mode='rb') as toml_file:
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if sys.version_info < (3, 11):
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return tomli.load(toml_file)
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return tomllib.load(toml_file)
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def __repr__(self) -> str:
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return f'{self.__class__.__name__}(toml_file={self.toml_file_path})'
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