#__author__ = 'DouYunQian'

 #coding=utf-8

 import numpy as np

 height=[1.73,1.68,1.71,1.89,1.79]

 weight=[65.4,59.2,63.6,88.4,68.7]

 nup_height=np.array(height)

 nup_weight=np.array(weight)

 result=nup_weight/nup_height**2

 print(result)

 print(type(nup_height))#输出  <class 'numpy.ndarray'>

 #numpy二维数组的处理

 c=np.array([[1,2,3],[4,5,6]])

 print(c.shape)#输出几行几列  (2, 3)

 print(c[1][1])#获取具体某个值  5

 d=c[1][c[1]>4]

 print(d)#获取大于2的具体数值的写法 ：输出[5 6]

 print(c[0])#选取某一列

 l=[[1,50],[2,60],[5,80]]#list

 l=np.array(l)#做成nump

 print(np.mean(l[:,1]))#再进行求平均数

 print(np.median(l[:1]))#求处在中间的那个数组的数据

 #数据的产生

 height=np.round(np.random.normal(1.75,0.20,5000),2)

 weight=np.round(np.random.normal(60.32,15,5000),2)

 city=np.column_stack((height,weight))

 print(city)#结束数据产生