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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 user_context(self, worker_ctx, exc_info):
 """ Merge any user context to include in the sentry payload. Extracts user identifiers from the worker context data by matching context keys with """

        user = {}
        for key in worker_ctx.context_data:
            for matcher in self.user_type_context_keys:
                if re.search(matcher, key):
                    user[key] = worker_ctx.context_data[key]
                    break

        self.client.user_context(user)