For example, in Visual Studio Code, you can:

* Go to the "Debug" panel.
* "Add configuration...".
* Select "Python"
* Run the debugger with the option "`Python: Current File (Integrated Terminal)`".

It will then start the server with your **FastAPI** code, stop at your breakpoints, etc.

Here's how it might look:

<img src="/img/tutorial/debugging/image01.png">

---

If you use Pycharm, you can:

/// note | 技術細節

你也可以使用 `from starlette.middleware.cors import CORSMiddleware`。

**FastAPI** 在 `fastapi.middleware` 中提供了幾個中介軟體，做為開發者的便利性。但多數可用的中介軟體其實直接來自 Starlette。

    @Override
    int writeBytesWireFormat(final byte[] dst, final int dstIndex) {
        return 0;
    }

    @Override
    int readParameterWordsWireFormat(final byte[] buffer, int bufferIndex) {
        final int start = bufferIndex;

        oplockLevel = buffer[bufferIndex];
        bufferIndex++;
        fid = readInt2(buffer, bufferIndex);
        bufferIndex += 2;
        createAction = readInt4(buffer, bufferIndex);

    public int decode(final byte[] buffer, int bufferIndex, final int len) throws SMBProtocolDecodingException {
        if (len == 0) {
            // nothing to do
            return 0;
        }
        final int start = bufferIndex;

        this.nextEntryOffset = SMBUtil.readInt4(buffer, bufferIndex);
        bufferIndex += 4;

        if (this.nextEntryOffset % 4 != 0) {

        this.length = SMBUtil.readInt4(buffer, bufferIndex);
        return 4;
    }

    @Override
    protected int readDataWireFormat(final byte[] buffer, int bufferIndex, final int len) {
        final int start = bufferIndex;

        if (this.getErrorCode() != 0) {
            return 4;
        }

        try {
            this.securityDescriptor = new SecurityDescriptor();

            this.transportContext = SingletonContext.getInstance();
        }
        return this.transportContext;
    }

    @Override
    protected void parseURL(final URL u, String spec, final int start, int limit) {
        final String host = u.getHost();
        String path, ref;
        int port;

        if (spec.equals("smb://")) {
            spec = "smb:////";
            limit += 2;

func (o *listPathOptions) parseMarker() {
	s := o.Marker
	if !strings.Contains(s, "[minio_cache:"+markerTagVersion) {
		return
	}
	start := strings.LastIndex(s, "[")
	o.Marker = s[:start]
	end := strings.LastIndex(s, "]")
	tag := strings.Trim(s[start:end], "[]")
	tags := strings.SplitSeq(tag, ",")
	for tag := range tags {
		kv := strings.Split(tag, ":")
		if len(kv) < 2 {

        System.arraycopy(fid, 0, buf, pos, 16);
        pos += 16;

        // Calculate offsets relative to start of SMB2 header
        int inputOffsetField = inputCount > 0 ? payloadStart : 0;
        int outputOffsetField = outputCount > 0 ? payloadStart + inputCount : 0;

        // inputOffset (relative to header start)
        SMBUtil.writeInt4(inputOffsetField, buf, pos);
        pos += 4;
        // inputCount

x-minio-common: &minio-common
  image: minio/minio:${MINIO_VERSION}
  command: server http://minio{1...4}/data{1...3}
  env_file:
    - ./minio.env
  expose:
    - "9000"
    - "9001"

# starts 4 docker containers running minio server instances.
# using nginx reverse proxy, load balancing, you can access
# it through port 9000.
services:
  minio1:
    <<: *minio-common
    hostname: minio1
    volumes:

  # environment:
    # MINIO_ROOT_USER: minioadmin
    # MINIO_ROOT_PASSWORD: minioadmin
  healthcheck:
    test: ["CMD", "mc", "ready", "local"]
    interval: 5s
    timeout: 5s
    retries: 5

# starts 4 docker containers running minio server instances.
# using nginx reverse proxy, load balancing, you can access
# it through port 9000.
services:
  minio1:
    <<: *minio-common
    hostname: minio1
    volumes: