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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 _parse_season(self, row):
 """ Parse the season string from the table. The season is generally located in the first column of the stats tables and should be parsed to detonate which season metrics are being pulled from. Parameters row : PyQuery object A PyQuery object of a single row in a stats table. Returns ------- string A string representation of the season in the format 'YYYY', such as '2017'. """

        season = utils._parse_field(PLAYER_SCHEME, row, 'season')
        return season.replace('*', '').replace('+', '')