Python: improve .env handling and observability samples (#4032)

* Python: improve .env precedence and observability samples

- Switch load_settings to explicit precedence: overrides -> explicit .env -> environment -> defaults\n- Raise when env_file_path is provided but missing\n- Update settings docs and tests for new behavior\n- Refresh observability samples and README guidance for env loading options\n\nCloses #3864\n\nCo-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* fixed some imports

* Fix load_settings CI regressions

Allow explicit env_file_path values that exist but are not regular files (for example /dev/null) by checking path existence before dotenv parsing, and restore a dict accumulator with typed return cast to satisfy mypy.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Avoid implicit dotenv in observability

Only load dotenv in observability helpers when env_file_path is explicitly provided, and remove test os.devnull workarounds that are no longer necessary.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

---------

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
This commit is contained in:
Eduard van Valkenburg
2026-02-18 12:18:52 +01:00
committed by GitHub
Unverified
parent f900febb6f
commit 534e5f5bf7
41 changed files with 250 additions and 221 deletions
@@ -15,7 +15,7 @@ from agent_framework_foundry_local._foundry_local_client import FoundryLocalSett
def test_foundry_local_settings_init_from_env(foundry_local_unit_test_env: dict[str, str]) -> None:
"""Test FoundryLocalSettings initialization from environment variables."""
settings = load_settings(FoundryLocalSettings, env_prefix="FOUNDRY_LOCAL_", env_file_path="test.env")
settings = load_settings(FoundryLocalSettings, env_prefix="FOUNDRY_LOCAL_")
assert settings["model_id"] == foundry_local_unit_test_env["FOUNDRY_LOCAL_MODEL_ID"]
@@ -26,7 +26,6 @@ def test_foundry_local_settings_init_with_explicit_values() -> None:
FoundryLocalSettings,
env_prefix="FOUNDRY_LOCAL_",
model_id="custom-model-id",
env_file_path="test.env",
)
assert settings["model_id"] == "custom-model-id"
@@ -40,14 +39,13 @@ def test_foundry_local_settings_missing_model_id(foundry_local_unit_test_env: di
FoundryLocalSettings,
env_prefix="FOUNDRY_LOCAL_",
required_fields=["model_id"],
env_file_path="test.env",
)
def test_foundry_local_settings_explicit_overrides_env(foundry_local_unit_test_env: dict[str, str]) -> None:
"""Test that explicit values override environment variables."""
settings = load_settings(
FoundryLocalSettings, env_prefix="FOUNDRY_LOCAL_", model_id="override-model-id", env_file_path="test.env"
FoundryLocalSettings, env_prefix="FOUNDRY_LOCAL_", model_id="override-model-id"
)
assert settings["model_id"] == "override-model-id"
@@ -63,7 +61,7 @@ def test_foundry_local_client_init(mock_foundry_local_manager: MagicMock) -> Non
"agent_framework_foundry_local._foundry_local_client.FoundryLocalManager",
return_value=mock_foundry_local_manager,
):
client = FoundryLocalClient(model_id="test-model-id", env_file_path="test.env")
client = FoundryLocalClient(model_id="test-model-id")
assert client.model_id == "test-model-id"
assert client.manager is mock_foundry_local_manager
@@ -76,7 +74,7 @@ def test_foundry_local_client_init_with_bootstrap_false(mock_foundry_local_manag
"agent_framework_foundry_local._foundry_local_client.FoundryLocalManager",
return_value=mock_foundry_local_manager,
) as mock_manager_class:
FoundryLocalClient(model_id="test-model-id", bootstrap=False, env_file_path="test.env")
FoundryLocalClient(model_id="test-model-id", bootstrap=False)
mock_manager_class.assert_called_once_with(
bootstrap=False,
@@ -90,7 +88,7 @@ def test_foundry_local_client_init_with_timeout(mock_foundry_local_manager: Magi
"agent_framework_foundry_local._foundry_local_client.FoundryLocalManager",
return_value=mock_foundry_local_manager,
) as mock_manager_class:
FoundryLocalClient(model_id="test-model-id", timeout=60.0, env_file_path="test.env")
FoundryLocalClient(model_id="test-model-id", timeout=60.0)
mock_manager_class.assert_called_once_with(
bootstrap=True,
@@ -109,7 +107,7 @@ def test_foundry_local_client_init_model_not_found(mock_foundry_local_manager: M
),
pytest.raises(ServiceInitializationError, match="not found in Foundry Local"),
):
FoundryLocalClient(model_id="unknown-model", env_file_path="test.env")
FoundryLocalClient(model_id="unknown-model")
def test_foundry_local_client_uses_model_info_id(mock_foundry_local_manager: MagicMock) -> None:
@@ -122,7 +120,7 @@ def test_foundry_local_client_uses_model_info_id(mock_foundry_local_manager: Mag
"agent_framework_foundry_local._foundry_local_client.FoundryLocalManager",
return_value=mock_foundry_local_manager,
):
client = FoundryLocalClient(model_id="model-alias", env_file_path="test.env")
client = FoundryLocalClient(model_id="model-alias")
assert client.model_id == "resolved-model-id"
@@ -135,7 +133,7 @@ def test_foundry_local_client_init_from_env(
"agent_framework_foundry_local._foundry_local_client.FoundryLocalManager",
return_value=mock_foundry_local_manager,
):
client = FoundryLocalClient(env_file_path="test.env")
client = FoundryLocalClient()
assert client.model_id == foundry_local_unit_test_env["FOUNDRY_LOCAL_MODEL_ID"]
@@ -148,7 +146,7 @@ def test_foundry_local_client_init_with_device(mock_foundry_local_manager: Magic
"agent_framework_foundry_local._foundry_local_client.FoundryLocalManager",
return_value=mock_foundry_local_manager,
):
FoundryLocalClient(model_id="test-model-id", device=DeviceType.CPU, env_file_path="test.env")
FoundryLocalClient(model_id="test-model-id", device=DeviceType.CPU)
mock_foundry_local_manager.get_model_info.assert_called_once_with(
alias_or_model_id="test-model-id",
@@ -177,7 +175,7 @@ def test_foundry_local_client_init_model_not_found_with_device(mock_foundry_loca
),
pytest.raises(ServiceInitializationError, match="unknown-model:GPU.*not found"),
):
FoundryLocalClient(model_id="unknown-model", device=DeviceType.GPU, env_file_path="test.env")
FoundryLocalClient(model_id="unknown-model", device=DeviceType.GPU)
def test_foundry_local_client_init_with_prepare_model_false(mock_foundry_local_manager: MagicMock) -> None:
@@ -186,7 +184,7 @@ def test_foundry_local_client_init_with_prepare_model_false(mock_foundry_local_m
"agent_framework_foundry_local._foundry_local_client.FoundryLocalManager",
return_value=mock_foundry_local_manager,
):
FoundryLocalClient(model_id="test-model-id", prepare_model=False, env_file_path="test.env")
FoundryLocalClient(model_id="test-model-id", prepare_model=False)
mock_foundry_local_manager.download_model.assert_not_called()
mock_foundry_local_manager.load_model.assert_not_called()
@@ -198,7 +196,7 @@ def test_foundry_local_client_init_calls_download_and_load(mock_foundry_local_ma
"agent_framework_foundry_local._foundry_local_client.FoundryLocalManager",
return_value=mock_foundry_local_manager,
):
FoundryLocalClient(model_id="test-model-id", env_file_path="test.env")
FoundryLocalClient(model_id="test-model-id")
mock_foundry_local_manager.download_model.assert_called_once_with(
alias_or_model_id="test-model-id",