{* ../../docs_src/dependencies/tutorial008e_an_py39.py hl[12,16] *}

`Depends()` receives a `scope` parameter that can be:

///

Activating a virtual environment adds its path `.venv/bin` (on Linux and macOS) or `.venv\Scripts` (on Windows) to the `PATH` environment variable.

Let's say that before activating the environment, the `PATH` variable looked like this:

//// tab | Linux, macOS

```plaintext
/usr/bin:/bin:/usr/sbin:/sbin
```

That means that the system would look for programs in:

   *
   * This is typically invoked immediately before bytes are returned to the application. If the
   * response body is empty this is invoked immediately before returning that to the application.
   *
   * If the application closes the response body before attempting a read, this is invoked at the
   * time it is closed.
   *

  fi
fi

# For Cygwin, ensure paths are in UNIX format before anything is touched
if $cygwin; then
  [ -n "$JAVA_HOME" ] \
    && JAVA_HOME=$(cygpath --unix "$JAVA_HOME")
  [ -n "$CLASSPATH" ] \
    && CLASSPATH=$(cygpath --path --unix "$CLASSPATH")
fi

# For Mingw, ensure paths are in UNIX format before anything is touched
if $mingw; then
  [ -n "$JAVA_HOME" ] && [ -d "$JAVA_HOME" ] \

			expectedUpdate: false,
		},
		{
			meta:           nmeta2,
			pools:          pools,
			name:           "Correct-Decom-Pending",
			expectedErr:    false,
			expectedUpdate: false,
		},
		{
			meta:           nmeta2,
			pools:          reducedPools,
			name:           "Invalid-Decom-Pending-Pool-Removal",
			expectedErr:    false,
			expectedUpdate: true,
		},
		{
			meta:           nmeta1,

	var buf bytes.Buffer
	msgp.Encode(&buf, &v)

	m := v.Msgsize()
	if buf.Len() > m {
		t.Log("WARNING: TestEncodeDecodensScannerOptions Msgsize() is inaccurate")
	}

	vn := nsScannerOptions{}
	err := msgp.Decode(&buf, &vn)
	if err != nil {
		t.Error(err)
	}

	buf.Reset()
	msgp.Encode(&buf, &v)
	err = msgp.NewReader(&buf).Skip()
	if err != nil {
		t.Error(err)
	}
}

        return 0;
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.internal.smb1.ServerMessageBlock#decode(byte[], int)
     */
    @Override
    public int decode(final byte[] buffer, final int bufferIndex) throws SMBProtocolDecodingException {
        final int len = super.decode(buffer, bufferIndex);
        if (this.byteCount == 0) {
            // otherwise hasMore may not be correctly set

                // this needs to be done before the reference to the remote hostname later
                transport.ensureConnected();

                if (waitForState(transport) == 2) {
                    // already connected
                    return null;
                }
                final int before = this.connectionState.getAndSet(1);
                if (before == 1) {

public interface CommonServerMessageBlock extends Message {

    /**
     * Decode message data from the given byte array
     *
     * @param buffer the byte array containing the message data
     * @param bufferIndex the starting index in the buffer
     * @return message length
     * @throws SMBProtocolDecodingException if decoding fails
     */
    int decode(byte[] buffer, int bufferIndex) throws SMBProtocolDecodingException;

    /**

     */
    void write(File output, Map<String, Object> options, Settings settings) throws IOException;

    /**
     * Writes the supplied settings to the specified character writer. The writer will be automatically closed before
     * the method returns.
     *
     * @param output The writer to serialize the settings to, must not be {@code null}.
     * @param options The options to use for serialization, may be {@code null} to use the default values.