Python3 使用urllib 爬取网页

from urllib import request

def down_html(url, fname):
    r = request.urlopen(url=url)
    with open(fname, 'wb') as fobj:
        while True:
            data = r.read(1024)
            if not data:
                break
            fobj.write(data)

if __name__ == '__main__':
    url = 'https://www.dy2018.com/'
    fname = '/tmp/dytt.html'
    down_html(url, fname)