生成数据表

1、首先导入pandas库，一般都会用到numpy库，所以我们先导入备用：

import numpy as np

import pandas as pd

2、导入CSV或者xlsx文件：

df = pd.DataFrame(pd.read_csv('name.csv',header=1))

df = pd.DataFrame(pd.read_excel('name.xlsx'))

3、用pandas创建数据表：

df = pd.DataFrame({"id":[1001,1002,1003,1004,1005,1006],

"date":pd.date_range('20130102', periods=6),

"city":['Beijing ', 'SH', ' guangzhou ', 'Shenzhen', 'shanghai', 'BEIJING '],

"age":[23,44,54,32,34,32],

"category":['100-A','100-B','110-A','110-C','210-A','130-F'],

"price":[1200,np.nan,2133,5433,np.nan,4432]},

columns =['id','date','city','category','age','price'])