How to use the pympler.util.bottle3.HTTPError function in Pympler

if hasattr(out, 'read') and 'wsgi.file_wrapper' in request.environ:
            out = request.environ.get('wsgi.file_wrapper',
            lambda x, y: iter(lambda: x.read(y), ''))(out, 1024*64)

        # Handle Iterables. We peek into them to detect their inner type.
        try:
            out = iter(out)
            first = next(out)
            while not first:
                first = next(out)
        except StopIteration:
            return self._cast('', request, response)
        except HTTPResponse as e:
            first = e
        except Exception as e:
            first = HTTPError(500, 'Unhandled exception', e, format_exc(10))
            if isinstance(e, (KeyboardInterrupt, SystemExit, MemoryError))\
            or not self.catchall:
                raise
        # These are the inner types allowed in iterator or generator objects.
        if isinstance(first, HTTPResponse):
            return self._cast(first, request, response)
        if isinstance(first, StringType):
            return itertools.chain([first], out)
        if isinstance(first, str):
            return map(lambda x: x.encode(response.charset),
                                  itertools.chain([first], out))
        return self._cast(HTTPError(500, 'Unsupported response type: %s'\
                                         % type(first)), request, response)

def handle(self, url, method):
        """ Execute the handler bound to the specified url and method and return
        its output. If catchall is true, exceptions are catched and returned as
        HTTPError(500) objects. """
        if not self.serve:
            return HTTPError(503, "Server stopped")

        handler, args = self.match_url(url, method)
        if not handler:
            return HTTPError(404, "Not found:" + url)

        try:
            return handler(**args)
        except HTTPResponse as e:
            return e
        except Exception as e:
            if isinstance(e, (KeyboardInterrupt, SystemExit, MemoryError))\
            or not self.catchall:
                raise
            return HTTPError(500, 'Unhandled exception', e, format_exc(10))

# Empty output is done here
        if not out:
            response.headers['Content-Length'] = 0
            return []
        # Join lists of byte or unicode strings. Mixed lists are NOT supported
        if isinstance(out, list) and isinstance(out[0], (StringType, str)):
            out = out[0][0:0].join(out) # b'abc'[0:0] -> b''
        # Encode unicode strings
        if isinstance(out, str):
            out = out.encode(response.charset)
        # Byte Strings are just returned
        if isinstance(out, StringType):
            response.headers['Content-Length'] = str(len(out))
            return [out]
        # HTTPError or HTTPException (recursive, because they may wrap anything)
        if isinstance(out, HTTPError):
            out.apply(response)
            return self._cast(self.error_handler.get(out.status, repr)(out), request, response)
        if isinstance(out, HTTPResponse):
            out.apply(response)
            return self._cast(out.output, request, response)

        # Cast Files into iterables
        if hasattr(out, 'read') and 'wsgi.file_wrapper' in request.environ:
            out = request.environ.get('wsgi.file_wrapper',
            lambda x, y: iter(lambda: x.read(y), ''))(out, 1024*64)

        # Handle Iterables. We peek into them to detect their inner type.
        try:
            out = iter(out)
            first = next(out)
            while not first:

if not self.serve:
            return HTTPError(503, "Server stopped")

        handler, args = self.match_url(url, method)
        if not handler:
            return HTTPError(404, "Not found:" + url)

        try:
            return handler(**args)
        except HTTPResponse as e:
            return e
        except Exception as e:
            if isinstance(e, (KeyboardInterrupt, SystemExit, MemoryError))\
            or not self.catchall:
                raise
            return HTTPError(500, 'Unhandled exception', e, format_exc(10))

def static_file(filename, root, guessmime=True, mimetype=None, download=False):
    """ Opens a file in a save way and returns a HTTPError object with status
        code 200, 305, 401 or 404. Sets Content-Type, Content-Length and
        Last-Modified header. Obeys If-Modified-Since header and HEAD requests.
    """
    root = os.path.abspath(root) + os.sep
    filename = os.path.abspath(os.path.join(root, filename.strip('/\\')))
    header = dict()

    if not filename.startswith(root):
        return HTTPError(401, "Access denied.")
    if not os.path.exists(filename) or not os.path.isfile(filename):
        return HTTPError(404, "File does not exist.")
    if not os.access(filename, os.R_OK):
        return HTTPError(401, "You do not have permission to access this file.")

    if not mimetype and guessmime:
        header['Content-Type'] = mimetypes.guess_type(filename)[0]
    else:
        header['Content-Type'] = mimetype if mimetype else 'text/plain'

    if download == True:
        download = os.path.basename(filename)
    if download:
        header['Content-Disposition'] = 'attachment; filename="%s"' % download

    stats = os.stat(filename)
    lm = time.strftime("%a, %d %b %Y %H:%M:%S GMT", time.gmtime(stats.st_mtime))
    header['Last-Modified'] = lm

def static_file(filename, root, guessmime=True, mimetype=None, download=False):
    """ Opens a file in a save way and returns a HTTPError object with status
        code 200, 305, 401 or 404. Sets Content-Type, Content-Length and
        Last-Modified header. Obeys If-Modified-Since header and HEAD requests.
    """
    root = os.path.abspath(root) + os.sep
    filename = os.path.abspath(os.path.join(root, filename.strip('/\\')))
    header = dict()

    if not filename.startswith(root):
        return HTTPError(401, "Access denied.")
    if not os.path.exists(filename) or not os.path.isfile(filename):
        return HTTPError(404, "File does not exist.")
    if not os.access(filename, os.R_OK):
        return HTTPError(401, "You do not have permission to access this file.")

    if not mimetype and guessmime:
        header['Content-Type'] = mimetypes.guess_type(filename)[0]
    else:
        header['Content-Type'] = mimetype if mimetype else 'text/plain'

    if download == True:
        download = os.path.basename(filename)
    if download:
        header['Content-Disposition'] = 'attachment; filename="%s"' % download

    stats = os.stat(filename)
    lm = time.strftime("%a, %d %b %Y %H:%M:%S GMT", time.gmtime(stats.st_mtime))
    header['Last-Modified'] = lm
    ims = request.environ.get('HTTP_IF_MODIFIED_SINCE')
    if ims:

except HTTPResponse as e:
            first = e
        except Exception as e:
            first = HTTPError(500, 'Unhandled exception', e, format_exc(10))
            if isinstance(e, (KeyboardInterrupt, SystemExit, MemoryError))\
            or not self.catchall:
                raise
        # These are the inner types allowed in iterator or generator objects.
        if isinstance(first, HTTPResponse):
            return self._cast(first, request, response)
        if isinstance(first, StringType):
            return itertools.chain([first], out)
        if isinstance(first, str):
            return map(lambda x: x.encode(response.charset),
                                  itertools.chain([first], out))
        return self._cast(HTTPError(500, 'Unsupported response type: %s'\
                                         % type(first)), request, response)

def handle(self, url, method):
        """ Execute the handler bound to the specified url and method and return
        its output. If catchall is true, exceptions are catched and returned as
        HTTPError(500) objects. """
        if not self.serve:
            return HTTPError(503, "Server stopped")

        handler, args = self.match_url(url, method)
        if not handler:
            return HTTPError(404, "Not found:" + url)

        try:
            return handler(**args)
        except HTTPResponse as e:
            return e
        except Exception as e:
            if isinstance(e, (KeyboardInterrupt, SystemExit, MemoryError))\
            or not self.catchall:
                raise
            return HTTPError(500, 'Unhandled exception', e, format_exc(10))