import numpy
import pandas
 
data = pandas.read_csv(
  'C:/Users/ZL/Desktop/Python/5.4/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]
 File "<ipython-input-1-ae921a24967f>", line 25
  aggfunc=[numpy.size]
            ^
SyntaxError: unexpected EOF while parsing
 
 
import numpy
import pandas
 
data = pandas.read_csv(
  'C:/Users/ZL/Desktop/Python/5.4/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
Out[4]: 
     size    
      年龄    
性别     女   男
年龄分层        
20岁以及以下  111  1950
21岁到30岁 2903 43955
31岁到40岁  735  7994
41岁以上   567  886