# デバッグ { #debugging }

Visual Studio CodeやPyCharmなどを使用して、エディター上でデバッガーと連携できます。

## `uvicorn` を呼び出す { #call-uvicorn }

FastAPIアプリケーション上で、`uvicorn` を直接インポートして実行します:

{* ../../docs_src/debugging/tutorial001_py310.py hl[1,15] *}

### `__name__ == "__main__"` について { #about-name-main }

`__name__ == "__main__"` の主な目的は、ファイルが次のコマンドで呼び出されたときに実行されるコードを用意することです:

<div class="termy">

```console
$ python myapp.py
```

</div>

	rw := httptest.NewRecorder()
	trw := &trackingResponseWriter{ResponseWriter: rw}
	trw.WriteHeader(123)
	if !trw.headerWritten {
		t.Fatal("headerWritten was not set by WriteHeader call")
	}

	_, err := trw.Write([]byte("hello"))
	if err != nil {
		t.Fatalf("Write unexpectedly failed: %v", err)
	}

	// Check that WriteHeader and Write were called on the underlying response writer

  private <T> @Nullable T getDefaultValue(TypeToken<T> type) {
    // We assume that all defaults are generics-safe, even if they aren't,
    // we take the risk.
    @SuppressWarnings("unchecked")
    T defaultValue = (T) defaults.getInstance(type.getRawType());
    if (defaultValue != null) {
      return defaultValue;
    }
    @SuppressWarnings("unchecked") // All arbitrary instances are generics-safe

     */
    abstract int separatorStart(int start);

    /**
     * Returns the first index in {@code toSplit} after {@code separatorPosition} that does not
     * contain a separator. This method is only invoked after a call to {@code separatorStart}.
     */
    abstract int separatorEnd(int separatorPosition);

    int offset = 0;
    int limit;

    SplittingIterator(Splitter splitter, CharSequence toSplit) {

  // as Combiner.

  public void testWhenAllSucceed_call_failedInput() throws Exception {
    assertFinallyFailsWithException(
        ClosingFuture.whenAllSucceed(
                ImmutableList.of(
                    ClosingFuture.from(immediateFuture("value")), failedClosingFuture()))
            .call(
                (closer, peeker) -> {

In diesem Fall möchten Sie also **nicht** mehrere Worker im Container haben, z. B. mit der `--workers` Befehlszeilenoption. Sie möchten nur einen **einzelnen Uvicorn-Prozess** pro Container haben (wahrscheinlich aber mehrere Container).

    public String toString() {
      // TODO(cpovirk): maybe make this look like the method call does ("Functions.compose(...)")
      return g + "(" + f + ")";
    }

    @GwtIncompatible @J2ktIncompatible private static final long serialVersionUID = 0;
  }

  /**
   * Creates a function that returns the same boolean output as the given predicate for all inputs.
   *

        System.arraycopy(stringBytes, 0, buffer, 10, stringBytes.length);
        buffer[10 + stringBytes.length] = 0; // null terminator

        // Use reflection to call protected readString method
        Method readStringMethod = getReadStringMethod();
        String result = (String) readStringMethod.invoke(response, buffer, 10, 128, false);

        assertEquals(testString, result);

        NbtAddress nbtAddress = new NbtAddress(mockName, testAddressInt, false, NbtAddress.H_NODE);
        assertEquals("TESTHOST<00>/192.168.1.1", nbtAddress.toString());
    }

    // Tests for methods that call checkData(CIFSContext tc)
    @Test
    void testIsGroupAddress_CheckDataCalled() throws UnknownHostException {
        // Test isGroupAddress when checkData is called (hostName is unknown)

      E e1, E e2, E e3, E e4, E e5, E e6, E... remaining) {
    int size = remaining.length + 6;
    List<E> all = Lists.newArrayListWithCapacity(size);
    Collections.addAll(all, e1, e2, e3, e4, e5, e6);
    Collections.addAll(all, remaining);
    return copyOf(Ordering.natural(), all);
  }

  /**
   * Returns an immutable sorted multiset containing the given elements sorted by their natural
   * ordering.