python爬虫实例

from urllib import request
from urllib import error

# 第一种方法，URLErroe和HTTPError
def Err():
url = "https://segmentfault.com/zzz"
req = request.Request(url)

try:
response = request.urlopen(req)
html = response.read().decode("utf-8")
print(html)
except error.HTTPError as e:
print(e.code)
except error.URLError as e:
print(e.reason)