import urllib
import http
url="http://www.baidu.com"
print("第一種方法")
response1=urllib.request.urlopen(url)
print(response1.getcode())
print(len(response1.read()))

print("第二種方法")
request=urllib.request(url)
request.add_header("user-agent","Mozilla/5.0")
response2=urllib.request.urlopen(request)
print(response2.getcode())
print (len(response2.read()))

print("第三種方法")
cj=http.cookiejar()
opener=urllib.request.build_opener(urllib.request.HTTPCookieProcessor(cj))
urllib.request.install_opener(opener)
response3=urllib.request.urlopen(url)
print(response3.getcode())
print(cj)
print(response3.read())

報錯是

?File "E:\新java\imooc\Test\Test_urllib2.py", line 2
SyntaxError: Non-UTF-8 code starting with '\xc4' in file E:\新java\imooc\Test\Test_urllib2.py on line 3, but no encoding declared; see http://python.org/dev/peps/pep-0263/ for details