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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 fetch_from(self, year: int, month: int):
 """Fetch data from year, month to current year month data"""

        self.raw_data = []
        self.data = []
        today = datetime.datetime.today()
        for year, month in self._month_year_iter(month, year, today.month, today.year):
            self.raw_data.append(self.fetcher.fetch(year, month, self.sid))
            self.data.extend(self.raw_data[-1]['data'])
        return self.data