然后，您可以调用该 Python 程序：

<div class="termy">

```console
// 这里我们还没有设置环境变量
$ python main.py

// 因为我们没有设置环境变量，所以我们得到默认值

Hello World from Python

// 但是如果我们先创建一个环境变量
$ export MY_NAME="Wade Wilson"

// 然后再次调用程序
$ python main.py

// 现在它可以读取环境变量

Hello Wade Wilson from Python
```

</div>

由于环境变量可以在代码之外设置，但可以由代码读取，并且不需要与其他文件一起存储（提交到 `git`），因此通常将它们用于配置或设置。

import subprocess

from playwright.sync_api import Playwright, sync_playwright


# Run playwright codegen to generate the code below, copy paste the sections in run()
def run(playwright: Playwright) -> None:
    browser = playwright.chromium.launch(headless=False)
    # Update the viewport manually
    context = browser.new_context(viewport={"width": 960, "height": 1080})
    page = context.new_page()
    page.goto("http://localhost:8000/docs")

to add trust for MinIO's own CA and for the CA of a Keycloak server, a Kubernetes secret can be created from the certificate files using `kubectl`: ``` kubectl -n minio create secret generic minio-trusted-certs --from-file=public.crt --from-file=keycloak.crt ``` If TLS is not enabled, you would need only the third party CA: ``` kubectl -n minio create secret generic minio-trusted-certs --from-file=keycloak.crt ``` The name of the generated secret can then be passed to Helm using a values file or...

	EnvKMSSecretKeyFile = "MINIO_KMS_SECRET_KEY_FILE" // Path to a file to read the static KMS key from
)

// EnvKMSReplicateKeyID is an env. variable that controls whether MinIO
// replicates the KMS key ID. By default, KMS key ID replication is enabled
// but can be turned off.

from fastapi.testclient import TestClient

from .main import app

client = TestClient(app)


def test_query():
    response = client.get("/query")
    assert response.status_code == 422
    assert response.json() == {
        "detail": [
            {
                "type": "missing",
                "loc": ["query", "query"],
                "msg": "Field required",
                "input": None,
            }
        ]

	}

	var count1, count2 int64
	DB.Model(&User{}).Count(&count1)
	if count1 <= 0 {
		t.Errorf("Should find some users")
	}

	if DB.Where("name = ?", "jinzhu; delete * from users").First(&User{}).Error == nil {
		t.Errorf("Should got error with invalid SQL")
	}

	DB.Model(&User{}).Count(&count2)
	if count1 != count2 {
		t.Errorf("No user should not be deleted by invalid SQL")
	}
}

import importlib

import pytest
from fastapi.testclient import TestClient


@pytest.fixture(
    name="client",
    params=[
        pytest.param("tutorial001_py39"),
    ],
)
def get_client(request: pytest.FixtureRequest):
    mod = importlib.import_module(f"docs_src.query_params.{request.param}")

    client = TestClient(mod.app)
    return client


@pytest.mark.parametrize(
    ("path", "expected_json"),
    [

import importlib

import pytest
from fastapi.testclient import TestClient


@pytest.fixture(
    name="client",
    params=[
        pytest.param("tutorial012_py39"),
        pytest.param("tutorial012_an_py39"),
    ],
)
def get_client(request: pytest.FixtureRequest):
    mod = importlib.import_module(
        f"docs_src.query_params_str_validations.{request.param}"
    )

    client = TestClient(mod.app)
    return client

// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package target

import (
	"sync"
	"sync/atomic"
)

// Inspired from Golang sync.Once but it is only marked
// initialized when the provided function returns nil.

type lazyInit struct {
	done uint32
	m    sync.Mutex
}

func (l *lazyInit) Do(f func() error) error {

from fastapi import Depends, FastAPI, HTTPException

app = FastAPI()


data = {
    "plumbus": {"description": "Freshly pickled plumbus", "owner": "Morty"},
    "portal-gun": {"description": "Gun to create portals", "owner": "Rick"},
}


class OwnerError(Exception):
    pass


def get_username():
    try:
        yield "Rick"
    except OwnerError as e:
        raise HTTPException(status_code=400, detail=f"Owner error: {e}")