def field_stats(self, field):
    stats = {}
    if (field in self.numeric_fields):
        stats.update(self.numeric_stats(field))
    if (field in self.frequency_fields):
        stats.update(self.frequency_stats(field))
    return stats
def field_stats(self, field):
    stats = {}
    if (field in self.numeric_fields):
        stats.update(self.numeric_stats(field))
    if (field in self.frequency_fields):
        stats.update(self.frequency_stats(field))
    return stats