py.lib.aw_config

Yohn Y. 2024-10-30 Parent:26be458b26bb Child:75523df5b946

9:493b42d19c8c Go to Latest

py.lib.aw_config/src/aw_config/env.py

* Не возвращаем _UNDEFINED вместо None

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1 # coding: utf-8
2
3 from os import environ as sysenv
4 from typing import Optional, Any
5
6 from .error import Error
7 from ._lib import _UNDEFINED
8
9
10 class EnvConfigError(Error):
11 def __init__(self, param_name: str, message: Any):
12 super().__init__(f'Ошибка в параметре: {param_name} - {message}')
13
14
15 def get_env(name: str, type_name: type, default: Optional[Any] = _UNDEFINED, mandatory: bool = False):
16 try:
17 return type_name(sysenv[name])
18
19 except (ValueError, TypeError) as e:
20 raise EnvConfigError(name, f'Ошибка преобразования типа - {e}')
21
22 except KeyError:
23 if default is _UNDEFINED and mandatory:
24 raise EnvConfigError(name, 'Не установлен параметр')
25
26 elif default is not _UNDEFINED:
27 return default