urllib2.urlopen() user agent header

[snippsat]

You can manipulate user-agent,the easiest way is of course to use Requests(should always be used anyway and not urllib).

λ ptpython 
>>> import requests

>>> r = requests.get("https://httpbin.org/headers", headers={"user-agent": "My cool Useragent" })
>>> print(r.text)
{
 "headers": {
   "Accept": "*/*",
   "Accept-Encoding": "gzip, deflate",
   "Connection": "close",
   "Host": "httpbin.org",
   "User-Agent": "My cool Useragent"
 }
}

I have a post here where i us urllib with FancyURLopener
This post set user-agent with Requests to get access.