import numpy
import pandas
data = pandas.read_csv(
'D:\\PDA\\5.5\\data.csv'
)
bins = [
min(data.年龄)-1, 20, 30, 40, max(data.年龄)+1
]
labels = [
'20岁以及以下', '21岁到30岁', '31岁到40岁', '41岁以上'
]
data['年龄分层'] = pandas.cut(
data.年龄,
bins,
labels=labels
)
ptResult = data.pivot_table(
values=['年龄'],
index=['年龄分层'],
columns=['性别'],
aggfunc=[numpy.size]
)
ptResult.sum()
ptResult.sum(axis=0)
ptResult.sum(axis=1)
ptResult.div(ptResult.sum(axis=1), axis=0)
ptResult.div(ptResult.sum(axis=0), axis=1)
