{* ../../docs_src/body_updates/tutorial001_py310.py hl[28:33] *}

`PUT` is used to receive data that should replace the existing data.

### Warning about replacing { #warning-about-replacing }

That means that if you want to update the item `bar` using `PUT` with a body containing:

```Python
{
    "name": "Barz",

    assertEquals(Strings.repeat("ZZ", s.length()), matcher.replaceFrom(s, "ZZ"));
    assertEquals("", matcher.trimFrom(s));
    assertEquals(s.length(), matcher.countIn(s));
  }

  // Kotlin subSequence()/replace() always return new strings, violating expectations of this test
  @J2ktIncompatible
  public void testGeneral() {
    doTestGeneral(is('a'), 'a', 'b');
    doTestGeneral(isNot('a'), 'b', 'a');

            if (StringUtil.isBlank(s)) {
                throw new CrawlingAccessException("uri is blank.");
            }

            try {
                uri = new URI(normalize(s).replace("%", "%25").replace(" ", "%20"));
            } catch (final URISyntaxException e) {
                throw new CrawlingAccessException("Invalid URL: " + s, e);
            }

            if (!"ftp".equals(uri.getScheme())) {

                    }
                }
            }
        } else {
            enc = fessConfig.getCrawlerDocumentFileNameEncoding();
        }

        final String escapedUrl = escapePlus ? url.replace("+", "%2B") : url;
        try {
            return URLDecoder.decode(escapedUrl, enc);
        } catch (final Exception e) {
            return url;
        }
    }

    /**

        try (BufferedReader reader = new BufferedReader(new InputStreamReader(in, Constants.UTF_8))) {
            long id = 0;
            String line = null;
            while ((line = reader.readLine()) != null) {
                // Remove comments
                final String replacedLine = line.replaceAll("#.*$", StringUtil.EMPTY).trim();

                // Skip empty lines or comment lines

    } catch (Exception e) {
      throw new Error(e);
    }
  }

  /**
   * Returns a sun.misc.Unsafe. Suitable for use in a 3rd party package. Replace with a simple call
   * to Unsafe.getUnsafe when integrating into a jdk.
   *
   * @return a sun.misc.Unsafe
   */
  private static Unsafe getUnsafe() {
    try {
      return Unsafe.getUnsafe();

    // The offset to the first element in a byte array.
    private static final int BYTE_ARRAY_BASE_OFFSET;

    /**
     * Returns an Unsafe. Suitable for use in a 3rd party package. Replace with a simple call to
     * Unsafe.getUnsafe when integrating into a JDK.
     *
     * @return an Unsafe instance if successful
     */
    private static Unsafe getUnsafe() {
      try {

                .addQueryParameter("hostname", hostname)
                .build(),
            ).post(query.toRequestBody(DNS_MESSAGE))
        } else {
          val encoded = query.base64Url().replace("=", "")
          val requestUrl = dnsUrl.newBuilder().addQueryParameter("dns", encoded).build()

          url(requestUrl)
        }
      }.build()

  class Builder {

                String line;
                StringBuilder contentBuilder = new StringBuilder();
                while ((line = reader.readLine()) != null) {
                    if (!line.trim().startsWith("#")) {
                        existingClasses.add(line.trim());
                    }
                    contentBuilder.append(line).append("\n");

            }
            available = generatorList.stream().map(s -> {
                if (s.startsWith("${path}")) {
                    for (final String p : pathList) {
                        final File f = new File(s.replace("${path}", p));
                        if (f.exists()) {
                            final String filePath = f.getAbsolutePath();
                            filePathMap.put(s, filePath);