
import numpy
import pandas
data = pandas.read_csv(
'D:\\PDA\\5.2\\data.csv'
)

aggResult = data.groupby(
by=['class']
)['score'].agg({
'总分': numpy.sum,
'人数': numpy.size,
'平均值': numpy.mean
})

import numpy
import pandas
data = pandas.read_csv(
'D:\\PDA\\5.2\\data.csv'
)
aggResult = data.groupby(
by=['class']
)['score'].agg({
'总分': numpy.sum,
'人数': numpy.size,
'平均值': numpy.mean
})
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