python读取绝对路径的三种方式

import pandas as pd
dood_inf0=pd.read_csv("C:\Users\Administrator\Desktop\food_info.csv")
dood_inf1=pd.read_csv(r"C:UsersAdministratorDesktopfood_info.csv")
dood_inf2=pd.read_csv("C:/Users/Administrator/Desktop/food_info.csv")