### 「コンテキストマネージャ」とは

「コンテキストマネージャ」とは、`with`文の中で使用できるPythonオブジェクトのことです。

例えば、<a href="https://docs.python.org/3/tutorial/inputoutput.html#reading-and-writing-files" class="external-link" target="_blank">ファイルを読み込むには`with`を使用することができます</a>:

```Python
with open("./somefile.txt") as f:
    contents = f.read()
    print(contents)
```

その後の`open("./somefile.txt")`は「コンテキストマネージャ」と呼ばれるオブジェクトを作成します。

            dstIndex += this.andx.byteCount;
        }

        return dstIndex - start;
    }

    /**
     * Reads the AndX wire format from buffer
     * @param buffer the buffer to read from
     * @param bufferIndex the starting index
     * @return the number of bytes read
     * @throws SMBProtocolDecodingException if decoding fails
     */

                    throw new ServletException(e);
                }
            }
        };

        assertDoesNotThrow(() -> networkExplorer.init(servletConfig));

        // Verify parameter reading
        verify(servletConfig).getInitParameter("jcifs.smb.client.domain");
        verify(servletConfig).getInitParameter("jcifs.http.enableBasic");
    }

    /**

     */
    protected static class ProcessDestroyer extends TimerTask {

        /** The process to monitor and destroy. */
        private final Process p;

        /** The input stream thread reading process output. */
        private final InputStreamThread ist;

        /** Flag indicating if the destroyer has been executed. */
        private final AtomicBoolean executed = new AtomicBoolean(false);

			}
		}
	}
	defer conn.Close()
	if debugPrint {
		fmt.Printf("grid: Upgraded request: %v\n", remoteAddr)
	}

	msg, _, err := wsutil.ReadClientData(conn)
	if err != nil {
		writeErr(fmt.Errorf("reading connect: %w", err))
		return
	}
	if debugPrint {
		fmt.Printf("%s handler: Got message, length %v\n", m.local, len(msg))
	}

	var message message
	_, _, err = message.parse(msg)
	if err != nil {

      }

    /**
     * Sets the default read timeout for new connections. A value of 0 means no timeout, otherwise
     * values must be between 1 and [Integer.MAX_VALUE] when converted to milliseconds.
     *
     * The read timeout is applied to both the TCP socket and for individual read IO operations
     * including on [Source] of the [Response]. The default value is 10 seconds.
     *

* Add a check for file size if the reading content returns empty ([#33976](https://github.com/kubernetes/kubernetes/pull/33976), [@jingxu97](https://github.com/jingxu97))
* Add a retry when reading a file content from a container ([#35560](https://github.com/kubernetes/kubernetes/pull/35560), [@jingxu97](https://github.com/jingxu97))

    a.commit()
    assertAbsent("a")
  }

  /**
   * Each read sees a snapshot of the file at the time read was called. This means that two reads of
   * the same key can see different data.
   */
  @Test
  fun readAndWriteOverlapsMaintainConsistency() {
    Assumptions.assumeFalse(windows) // Can't edit while a read is in progress.

    val v1Creator = cache.edit("k1")!!
    v1Creator.setString(0, "AAaa")

	}
	closeReader := func() { obj.Close() }
	reader, err := fn(obj, h, closeReader)
	if err != nil {
		return nil, proxy, err
	}
	reader.ObjInfo = oi.Clone()
	if rs != nil {
		contentSize, err := parseSizeFromContentRange(h)
		if err != nil {
			return nil, proxy, err
		}
		reader.ObjInfo.Size = contentSize
	}

	return reader, proxyResult{Proxy: true}, nil
}

		if s3Error != testCase.s3Error {
			if _, err := io.ReadAll(testCase.req.Body); toAPIErrorCode(ctx, err) != testCase.s3Error {
				t.Fatalf("Test %d: Unexpected S3 error: want %d - got %d (got after reading request %s)", i, testCase.s3Error, s3Error, toAPIError(ctx, err).Code)
			}
		}
	}
}

func TestCheckAdminRequestAuthType(t *testing.T) {
	ctx, cancel := context.WithCancel(t.Context())
	defer cancel()