### 创建

* 创建一个 `main.py` 文件并写入以下内容:

```Python
from typing import Union

from fastapi import FastAPI

app = FastAPI()


@app.get("/")
def read_root():
    return {"Hello": "World"}


@app.get("/items/{item_id}")
def read_item(item_id: int, q: Union[str, None] = None):
    return {"item_id": item_id, "q": q}
```

<details markdown="1">

    else:
        authenticate_value = "Bearer"
    credentials_exception = HTTPException(
        status_code=status.HTTP_401_UNAUTHORIZED,
        detail="Could not validate credentials",
        headers={"WWW-Authenticate": authenticate_value},
    )
    try:
        payload = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
        username: str = payload.get("sub")

  }

  @GwtIncompatible // different overflow behavior; could probably be made to work by using ~~
  public void testConcat_overflow_negative() {
    int dim1 = 1 << 16;
    int dim2 = 1 << 15;
    assertThat(dim1 * dim2).isLessThan(0);
    testConcatOverflow(dim1, dim2);
  }

  @GwtIncompatible // different overflow behavior; could probably be made to work by using ~~

        baos.write(new byte[1]); // Make it > 8 bytes
        byte[] pacData = baos.toByteArray();

        PACDecodingException e = assertThrows(PACDecodingException.class, () -> new Pac(pacData, keys));
        // The error could be about version or missing buffers
        assertNotNull(e.getMessage());
    }

    @Test
    void testUnalignedBuffer() throws IOException {
        // Create PAC with unaligned buffer offset

                MavenExecutionException.class,
                () -> sut.getRequiredProjectsBySelectors(mavenExecutionRequest, listOfProjects, selectors));
        assertTrue(exception.getMessage().contains("Could not find"));
        assertTrue(exception.getMessage().contains(":required"));
    }

    @Test
    void getRequiredProjectsBySelectorsReturnsProject() throws MavenExecutionException {

	errFatal(local.RegisterStreamingHandler(handlerTest2, h2))

	// local to remote
	remoteConn := local.Connection(remoteHost)
	errFatal(remoteConn.WaitForConnect(t.Context()))
	const testPayload = "Hello Grid World!"

	gotResp := make(chan struct{})
	go func() {
		start := time.Now()
		t.Log("Roundtrip: sending request")
		resp, err := remoteConn.Request(t.Context(), handlerTest, []byte(testPayload))

input size | lib | MB/s | Allocated
--- | --- | --- | ---
regular | standard | 97 | 3.6MB
regular | jstream | 175 | 2.1MB
large | standard | 92 | 305MB
large | jstream | 404 | 69MB

In a real world scenario, including initialization and reader overhead from varying blob sizes, performance can be expected as below:

				return 0, err
			}
			// We use a single recursive 'adb push' of the module root instead of
			// walking the tree and copying it piecewise. If the directory tree
			// contains nested modules this could push a lot of unnecessary contents,
			// but for the golang.org/x repos it seems to be significantly (~2x)
			// faster than copying one file at a time (via filepath.WalkDir),

            fail("Should throw CrawlingAccessException");
        } catch (CrawlingAccessException e) {
            // Expected
            assertTrue(e.getMessage().contains("Could not read a response body"));
            assertTrue(e.getMessage().contains("http://example.com/error"));
            assertNotNull(e.getCause());
        }
    }

            final Kryo kryo = new Kryo();
            // TODO use kryo.register for security
            // SECURITY WARNING: setRegistrationRequired(false) allows deserialization of arbitrary classes
            // which could potentially lead to remote code execution vulnerabilities.
            // This should be replaced with explicit class registration using kryo.register()
            // for all classes that need to be serialized/deserialized.