透视表

透视表代码示例

import numpy as np
import pandas as pd
from pandas import Series,DataFrame
df=pd.read_csv("city_weather.csv.csv")
print(df)
#生成透视表
print(pd.pivot_table(df,index=['city','wind']))
print(pd.pivot_table(df,index='city',values='temperature'))
print(pd.pivot_table(df,index='city',values='temperature',columns='wind'))