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import os
class Settings:
_instance = None
_settings = {}
def __new__(cls):
if cls._instance is None:
cls._instance = super().__new__(cls)
return cls._instance
def __setattr__(self, key, value):
if key.endswith("_key") or key in {"_instance", "_settings"}:
raise AttributeError(f"Modifying '{key}' is not allowed.")
self._settings[key] = value
def __getattr__(self, key):
if key.endswith("_key"):
actual_key = key[:-4] # Remove the "_key" suffix
return self.environment_variable_key_name(actual_key)
env_value = os.getenv(self.environment_variable_key_name(key))
if env_value is not None:
return env_value
if key in self._settings:
return self._settings[key]
raise AttributeError(f"'{key}' not found")
def environment_variable_key_name(self, key):
return "UNITXT_" + key.upper()
def get_all_environment_variables(self):
return [
self.environment_variable_key_name(key) for key in self._settings.keys()
]
def get_settings():
return Settings()
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