"""Check the variable name against white/black lists."""
  if blacklist and var_name in blacklist:
    return False
  if not whitelist_prefix:
    return True

  for prefix in whitelist_prefix:
    if var_name.startswith(prefix):
      return True
  return False


def main(parsed_args: argparse.Namespace):
  converted_vars = {}

  for var, value in os.environ.items():
    if not value or not should_convert(var,

        if (path == null) {
            return null;
        }

        for (final Map.Entry<String, SmbAuthentication> entry : authMap.entrySet()) {
            if (path.startsWith(entry.getKey())) {
                return entry.getValue();
            }
        }
        return null;
    }

                if (this.uncPath.startsWith("\\pipe\\")) {
                    th.send(new TransWaitNamedPipe(th.getConfig(), this.uncPath), new TransWaitNamedPipeResponse(th.getConfig()));
                }

                if (th.hasCapability(SmbConstants.CAP_NT_SMBS) || this.uncPath.startsWith("\\pipe\\")) {

        final boolean isSmbUrl = url.startsWith("smb:") || url.startsWith("smb1:");
        final boolean isFtpUrl = url.startsWith("ftp:");
        final boolean isSmbOrFtpUrl = isSmbUrl || isFtpUrl;

        // replacing url with mapping data
        url = ComponentUtil.getPathMappingHelper().replaceUrl(url);

        final boolean isHttpUrl = url.startsWith("http:") || url.startsWith("https:");

        if (isSmbUrl) {

        response.eaErrorOffset = 0;
        response.lastNameOffset = 100;
        response.lastName = "file5.txt";

        String actual = response.toString();
        assertTrue(actual.startsWith("Trans2FindFirst2Response["));
        assertTrue(actual.contains("sid=123"));
        assertTrue(actual.contains("searchCount=5"));
        assertTrue(actual.contains("isEndOfSearch=true"));

    SmbTreeImpl(final SmbSessionImpl session, final String share, final String service) {
        this.session = session.acquire();
        this.share = share.toUpperCase();
        if (service != null && !service.startsWith("??")) {
            this.service = service;
        }
        this.service0 = this.service;

        this.traceResource = this.session.getConfig().isTraceResourceUsage();
        if (this.traceResource) {

---

But if you're curious about this specific code example and you're still entertained, here are some extra details.

#### String with `value.startswith()` { #string-with-value-startswith }

Did you notice? a string using `value.startswith()` can take a tuple, and it will check each value in the tuple:

{* ../../docs_src/query_params_str_validations/tutorial015_an_py310.py ln[16:19] hl[17] *}

        String process = spec;
        ArtifactVersion version = null;
        ArtifactVersion upperBound = null;
        ArtifactVersion lowerBound = null;

        while (process.startsWith("[") || process.startsWith("(")) {
            int index1 = process.indexOf(')');
            int index2 = process.indexOf(']');

            int index = index2;
            if (index2 < 0 || index1 < index2) {

    }

    @Test
    void acceptHandlesNullName() throws Exception {
        SmbFile dir = Mockito.mock(SmbFile.class);
        SmbFilenameFilter filter = (d, n) -> n != null && n.startsWith("a");
        assertFalse(filter.accept(dir, null));
    }

    @Test
    void acceptPropagatesException() {
        SmbFile dir = Mockito.mock(SmbFile.class);
        SmbFilenameFilter filter = (d, n) -> {

    }

    @Test
    @DisplayName("toString contains class name and delegates to superclass")
    void toStringMatches() {
        String s = response.toString();
        assertNotNull(s);
        assertTrue(s.startsWith("SmbComSetInformationResponse["));
        assertTrue(s.endsWith("]"));
        // Verify it contains superclass toString content
        assertTrue(s.length() > "SmbComSetInformationResponse[]".length());
    }