environment.py
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| py
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import os from ..config import Configuration from ..setting import ListSetting from ..util import csv_to_list from .base import Source __all__ = ("EnvironmentVariableSource",) class EnvironmentVariableSource(Source): def __init__(self, prefix=None): super(EnvironmentVariableSource, self).__init__() self.prefix = prefix def get_config(self, settings, manager=None, parent=None): if manager and not self.prefix: self.prefix = manager.name for setting in settings: self.get_setting(setting) return Configuration(settings=settings, parent=parent) def get_setting(self, setting): name = setting.name if self.prefix: name = "%s_%s" % (self.prefix, name) name = name.upper() if name in os.environ: if isinstance(setting, ListSetting): setting.value = csv_to_list(os.environ[name]) else: setting.value = os.environ[name]
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