from urllib.request import urlretrieve # #下载网络文件到本地
import os
os.chdir("C:/Users/RankFan/Desktop/空间计量经济学")
for i in range(4, 6):
url = f'http://www.mysmu.edu/faculty/zlyang/ECON6...
U4 课件
R: Hi I’m Vincent, I’m a reporter from SSL middle school radio station. As a student, we should know something about the school rules, let’s find them out today. Ha-h...
