python之数据分析pandas (二)

import pandas as pd
#此包在pandas基础上实现sql
from pandasql import sqldf
file_name=r'/Users/gaochengcheng/Desktop/center.xls'
file_name3='/Users/gaochengcheng/Desktop/center_left3.xls'
file_name4='/Users/gaochengcheng/Desktop/center_left4.xls'
#读数据
df = pd.read_excel(file_name, sheet_name = "left3") 

# 打印表数据，如果数据太多，会略去中间部分
print(df)


sql ='''select * from df
''' 

df2=sqldf(sql)
print(df2)


#写数据
df2.to_excel(file_name4,index=False,header=True)