python pandas Series

 import numpy as np

import pandas as pd

In [5]:

sdata1 = pd.Series([4,7,-5,1])

In [6]:

sdata1 = pd.Series([4,7,-5,1], index = ['a','b','a','d'])

sdata1

Out[6]:

a    4
b    7
a   -5
d    1
dtype: int64

In [7]:

sdata1.index

Out[7]:

Index(['a', 'b', 'a', 'd'], dtype='object')

In [8]:

sdata1.values

Out[8]:

array([ 4,  7, -5,  1])

In [10]:

sdata1['b']

Out[10]:

7

In [14]:

sdata1['d'] = 100

sdata1

Out[14]:

a      4
b      7
a     -5
d    100
dtype: int64

In [15]:

sdata1 * 3

Out[15]:

a     12
b     21
a    -15
d    300
dtype: int64

In [16]:

sdata1 > 0

Out[16]:

a     True
b     True
a    False
d     True
dtype: bool

In [17]:

sdata1[sdata1 > 0]

Out[17]:

a      4
b      7
d    100
dtype: int64

In [18]:

np.cos(sdata1)

Out[18]:

a   -0.653644
b    0.753902
a    0.283662
d    0.862319
dtype: float64

In [19]:

ddata = {'name':'lee', 'age':30, 'height':180}

ddata

Out[19]:

{'name': 'lee', 'age': 30, 'height': 180}

sdata2 = pd.Series(ddata)

sdata2