Series

>>> import pandas as pd# 导入pandas模块s = pd.Series([1,2,3,4])s> 0 11 22 33 4dtype: int64>>> s.index> RangeIndex(start=0, stop=4, step=1)

更改前面序号index

>>> s2 = pd.Series([1,2,3,4],index = ['a','b','c','d'])s> a 1b 2c 3d 4dtype: int64

索引方法

>>> s1[1]> 2>>> s2['a']> 1# 多值索引>>> s2[['a','c']]# 最外面[]代表索引，里面[]索引的列表> a 1c 3dtype: int64

增加或者更改列表内容

>>> s2['m'] = 10s2> a1b2c3d4m 10dtype: int64#更改序号>>> d = {'mm':'aox','oo':'box','pp':'dox'}s3 = pd.Series(d,index = ['mm','xx','pp','kk'])s3> mm aoxxx NaNpp doxkk NaN# 即使序号增多，series一样可以识别，显示空值dtype: object

数值类型转换【series列表只能显示一种数据类型，list列表 可以多类型显示】

>>> s2.astype('str')> a 1b 2c 3d 4dtype: object#int64改成了boject