Python一维数据分析

1.Numpy数组

numpy的数组只能存放同一种数据类型,使用的方式和Python列表类似

1.1 声明:

 1 import numpy as np
 2 countries = np.array([
 3     'Afghanistan', 'Albania', 'Algeria', 'Angola', 'Argentina',
 4     'Armenia', 'Australia', 'Austria', 'Azerbaijan', 'Bahamas',
 5     'Bahrain', 'Bangladesh', 'Barbados', 'Belarus', 'Belgium',
 6     'Belize', 'Benin', 'Bhutan', 'Bolivia',
 7     'Bosnia and Herzegovina'
 8 ])
 9 employment = np.array([
10     55.70000076,  51.40000153,  50.5       ,  75.69999695,
11     58.40000153,  40.09999847,  61.5       ,  57.09999847,
12     60.90000153,  66.59999847,  60.40000153,  68.09999847,
13     66.90000153,  53.40000153,  48.59999847,  56.79999924,
14     71.59999847,  58.40000153,  70.40000153,  41.20000076
15 ])

View Code