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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def process_request(self, request, response):
 """Get session ID from cookie, load corresponding session data from coupled store and inject session data into the request context. """

        sid = request.cookies.get(self.cookie_name, None)
        data = {}
        if sid is not None:
            if self.store.exists(sid):
                data = self.store.get(sid)
        request.context.update({self.context_name: data})