urlerror.py

from urllib import request,error

if __name__ == '__main__':
	url = "http://www.baidu.com"

	try:
		req = request.Request(url)
		rsp = request.urlopen(req)
		html = rsp.read().decode()
		print(html)
	except error.URLError as e:
		print("URLError: {0}".format(e.reason))
		print("URLError: {0}".format(e))
	except Exception as e:
		print(e)