加载数据时出错,不知道怎么修改代理
import os
import pandas as pd
s = os.path.join('https://archive.ics.uci.edu', 'ml',
'machine-learning-databases', 'iris','iris.data')
print('URL:', s)
df = pd.read_csv(s,
header=None,
encoding='utf-8')
df.tail()