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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 from_epsg(self, epsg_code):
 """ Loads self.prj by epsg_code. If prjtext not found returns False. """

        self.epsg_code = epsg_code
        assert isinstance(self.epsg_code, int)
        cur = self.conn.cursor()
        cur.execute("SELECT prjtext FROM prj_epsg WHERE epsg_code = ?", (self.epsg_code,))
        result = cur.fetchone()
        if result is not None:
            self.prj = result[0]
            return True

        return False