這只是為了讓範例能放在同一個檔案中，方便你直接複製並執行。 🥚

///

使用 `with` 區塊可確保在產生器函式（包含 `yield` 的函式）完成後關閉該類檔案物件，也就是在送完回應之後。

在這個範例中因為是存在記憶體的假檔案（`io.BytesIO`），影響不大；但若是實際檔案，務必在處理完成後關閉檔案。

### 檔案與 Async { #files-and-async }

多數情況下，類檔案物件預設不相容於 async/await。

例如，它們沒有 `await file.read()`，也不支援 `async for chunk in file`。

而且在許多情況下，讀取它們會是阻塞操作（可能阻塞事件迴圈），因為資料是從磁碟或網路讀取。

/// info

             Searching for package file structure from directories with
             <font color="#3465A4">__init__.py</font> files
             Importing from <font color="#75507B">/home/user/code/</font><font color="#AD7FA8">awesomeapp</font>

   <span style="background-color:#007166"><font color="#D3D7CF"> module </font></span>  🐍 main.py

             Searching for package file structure from directories
             with <font color="#3465A4">__init__.py</font> files
             Importing from <font color="#75507B">/home/user/code/</font><font color="#AD7FA8">awesomeapp</font>

   <span style="background-color:#007166"><font color="#D3D7CF"> module </font></span>  🐍 main.py

	  }
	  public static void main( String[] args ) throws Exception
	  {
	    setDefault( new Downloader() );
	    java.nio.file.Files.copy( java.net.URI.create( args[0] ).toURL().openStream(), java.nio.file.Paths.get( args[1] ).toAbsolutePath().normalize() );
	  }
	}
	END
  # For Cygwin/MinGW, switch paths to Windows format before running javac and java

                setField(resp, jcifs.internal.smb1.trans.SmbComTransactionResponse.class, "status", 0);
            } else {
                // second next -> no more files
                setField(resp, jcifs.internal.smb1.trans.SmbComTransactionResponse.class, "status", NtStatus.NT_STATUS_NO_MORE_FILES);
                setField(resp, Trans2FindFirst2Response.class, "lastName", null);
            }

            assertDoesNotThrow(() -> SmbCopyUtil.copyFile(src, dest, buffers, 8, new WriterThread(), sh, dh));
        }
    }

    // --- Server-side copy path (SMB2 + same tree) for zero-length files ---

    @Test
    @DisplayName("copyFile uses server-side copy for zero-length and returns")
    void copyFile_serverSide_zeroLength_happyPath() throws Exception {
        // Arrange

             Searching for package file structure from directories with
             <font color="#3465A4">__init__.py</font> files
             Importing from <font color="#75507B">/home/user/code/</font><font color="#AD7FA8">awesomeapp</font>

   <span style="background-color:#007166"><font color="#D3D7CF"> module </font></span>  🐍 main.py

            c.getInputs().file(new File(project.getBuildDir(), "refspec"));
            if (useNativeExpanded) {
                c.getOutputs().dir(expectedOutputFile);
            } else {
                c.getOutputs().files(expectedOutputFile);
            }
            c.getOutputs().cacheIf("BWC distribution caching is disabled on 'master' branch", task -> {
                String gitBranch = System.getenv("GIT_BRANCH");

	}

	// Pick one from the first valid metadata.
	fi, err = pickValidFileInfo(ctx, partsMetadata, modTime, etag, quorum)
	return fi, partsMetadata, err
}

// cleanupMultipartPath removes all extraneous files and parts from the multipart folder, this is used per CompleteMultipart.
// do not use this function outside of completeMultipartUpload()
func (er erasureObjects) cleanupMultipartPath(ctx context.Context, paths ...string) {

type readBadSeeker struct{ io.ReadSeeker }

func (rbs *readBadSeeker) Seek(int64, int) (int64, error) { return 0, fmt.Errorf("illegal seek") }

// TestReadTruncation tests the ending condition on various truncated files and
// that truncated files are still detected even if the underlying io.Reader
// satisfies io.Seeker.
func TestReadTruncation(t *testing.T) {
	var ss []string
	for _, p := range []string{
		"testdata/gnu.tar",