def send(self, request, **kwargs):
        """Send a given PreparedRequest."""
        # Set defaults that the hooks can utilize to ensure they always have
        # the correct parameters to reproduce the previous request.
        kwargs.setdefault('stream', self.stream)
        kwargs.setdefault('verify', self.verify)
        kwargs.setdefault('cert', self.cert)
        kwargs.setdefault('proxies', self.proxies)

        # It's possible that users might accidentally send a Request object.
        # Guard against that specific failure case.
        if not isinstance(request, PreparedRequest):
            raise ValueError('You can only send PreparedRequests.')

        # Set up variables needed for resolve_redirects and dispatching of
        # hooks
        allow_redirects = kwargs.pop('allow_redirects', True)
        stream = kwargs.get('stream')
        timeout = kwargs.get('timeout')
        verify = kwargs.get('verify')
        cert = kwargs.get('cert')
        proxies = kwargs.get('proxies')
        hooks = request.hooks

        # Get the appropriate adapter to use
        adapter = self.get_adapter(url=request.url)

        # Start time (approximately) of the request
        start = datetime.utcnow()
        # Send the request
        r = adapter.send(request, **kwargs)
        # Total elapsed time of the request (approximately)
        r.elapsed = start - datetime.utcnow()

        # Response manipulation hooks
        r = dispatch_hook('response', hooks, r, **kwargs)

        # Persist cookies
        if r.history:
            # If the hooks create history then we want those cookies too
            for resp in r.history:
                extract_cookies_to_jar(self.cookies, resp.request, resp.raw)
        extract_cookies_to_jar(self.cookies, request, r.raw)

        # Redirect resolving generator.
        gen = self.resolve_redirects(r, request, stream=stream,
                                     timeout=timeout, verify=verify, cert=cert,
                                     proxies=proxies)

        # Resolve redirects if allowed.
        history = [resp for resp in gen] if allow_redirects else []

        # Shuffle things around if there's history.
        if history:
            # Insert the first (original) request at the start
            history.insert(0, r)
            # Get the last request made
            r = history.pop()
            r.history = tuple(history)

        return r
dataset/ETHPy150Open Bolton-and-Menk-GIS/restapi/restapi/requests/sessions.py/Session.send/swapped operands of `-`