Unicode decodeerror: 'UTF-8' codec can't decode byte 0xd0 in position 0 successfully resolved

When doing emotional classification tasks , Read csv The file is disgusting to death , The file coding format is notepad see utf8, also pycharm Also set utf8 Format , Still reporting errors , Finally, I added encoding="ISO-8859-1" It's a success , Anyway, I don't understand , Theory should use utf8 Of , Maybe there is still a problem with the data , Or you can turn it around with Notepad , Save again .

import pandas as pd
# Reading data , engine  The default is C
dataset = pd.read_csv("./data/training.1600000.processed.noemoticon.csv",encoding="ISO-8859-1",engine='python',header = None)
 # View the... Of the data table shape