立即学习:https://edu.csdn.net/course/play/26990/361126?utm_source=blogtoedu

数据堆叠

一、纵向

1.函数直接使用

sheet_name=workboook.sheet_names()

order1=pd.read_excel("meal_order_detail.xlsx",sheet_name="meal_order_detail1")
order2=pd.read_excel("meal_order_detail.xlsx",sheet_name="meal_order_detail2")
order3=pd.read_excel("meal_order_detail.xlsx",sheet_name="meal_order_detail3")

order=pd.concat([order1,order2,order3],axis=0,ignore_index=True)

2. 创建一个空白dataframebasic=pd.DataFrame()

for i in sheet_name:
    basic_i=pd.read_excel("meal_order_detail.xlsx",sheet_name=i)
    basic=pd.concat([basic,basic_i],axis=0,ignore_index=True)      

二、横向

df2=pd.merge(left=df,right=df1,how='inner',left_on='user_id',right_on='user_id')