Python urllib2 login to minecraft.net

I got a problem. I am writing a simple script to login to minecraft.net, and then list all classic servers. But when I run my script, it just redirects me back to minecraft.net/login. Here is what I have so far:

import urllib2
import urllib
import re

url = "https://www.minecraft.net/login"
page = urllib2.urlopen(url)
data = page.read()
page.close()

authToken = re.search('name="authenticityToken"[\s]+value="(.+)"', data).group(1)

data_dict = {
    "username": "USERNAME",
    "password": "PASSWORD",
    "remember": "true",
    #"redirect": "https://www.minecraft.net",
    "authenticityToken": authToken
}
print urllib.urlencode(data_dict)
req = urllib2.Request(url, data=urllib.urlencode(data_dict))
page = urllib2.urlopen(req)
data = page.read()
page.close()

What I am doing wrong?