<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def get_access_token_from_code( self, code, redirect_uri, app_id, app_secret ):
 """Get an access token from the "code" returned from an OAuth dialog. Returns a dict containing the user-specific access token and its expiration date (if applicable). """

        args = {
            "code": code,
            "redirect_uri": redirect_uri,
            "client_id": app_id,
            "client_secret": app_secret,
        }

        return self.request(
            "{0}/oauth/access_token".format(self.version), args
        )