数据处理16-1

import pandas as pd

dicts = {1:'baidu',2:'google',3:'bilibili'}
myseries = pd.Series(dicts,index=[2,3],name='sitesname')
print(myseries)

lists = ['baidu','google','bilibili']
myseries = pd.Series(lists,index=[1,2,3],name='sitesname')
print(myseries)

myseries = pd.Series([1,2,3,4],index=['a','b','c','d'])
print(myseries[2])
print(myseries['c'])

print(myseries[1:4])
print(myseries['b':'d'])

print(myseries)
print(myseries[0:2])
print(myseries[:2])
print(myseries['a':'b'])
print(myseries[:'b'])

print(myseries.index)
print(myseries.values)
print(myseries.item)

for value in myseries.values:
    print(value)

for i in myseries.index:
    print(i)

for a,b in myseries.items():
    print(a,b)

myseries[3] = 8
print(myseries)
myseries['d'] = 4
print(myseries)

del myseries['d']
print(myseries)

myseries_new = myseries.drop(['c'])
print(myseries_new)

print(myseries*2)

print(myseries)
print(myseries[myseries>=2])

import numpy as np
print(np.sqrt(myseries))