import urllib, urllib2, cookieliz

#Usuario y contraseña
username = 'email'
password = 'contraseña'


#Cookies
cj = cookielib.CookieJar()
opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cj))
#Equivale a un POST
login_data = urllib.urlencode({'username' : username, 'password' : password})
opener.open('https://ppp.com/login', login_data)

#Reportes
resp = opener.open('https://ppp.com/reports/csv/11777')
content = resp.read()
print content

"Inventory Name","Requests","Impressions","Fill Rate"
"aaass MWasdS","569737093","244066","0.04"
"bssss","331270265","381168","0.12"
"cumbia","152492369","190008","0.12"
"cuadrupedia","133983625","53184","0.04"