If you want an easy interface for someone to input regular data, you might like to use a Google Spreadsheet. You can extract the resulting data from the spreadsheet into Python using this code snippet:
import urllib2
import csv
url = GOOGLE_DOC_URL + "&output=csv"
request = urllib2.Request(url)
cookie_handler = urllib2.HTTPCookieProcessor()
redirect_handler = urllib2.HTTPRedirectHandler()
opener = urllib2.build_opener(redirect_handler,cookie_handler)
u = opener.open(request)
data = list(csv.reader(u))
You will need to share the document as "Anyone who has the link can view" because there is no authentication happening here. The variable GOOGLE_DOC_URL should be the URL shown in the "Sharing settings" panel. The final variable 'data' will hold an array of arrays of strings - the spreadsheet values are the strings.