iett.py

import requests
import lxml.html
from lxml.cssselect import CSSSelector

def get_filtered_nodes(content, selector):
	dom_tree = lxml.html.fromstring(content)
	selector = CSSSelector(selector)

	return selector(dom_tree)

def get_routes_by_stop(url):
	r = requests.get(url)
	routes = get_filtered_nodes(r.text, ".table-search-result td:first-child a")
	
	return [route.text for route in routes]

def find_bus_stop(input):
	r = requests.get("http://mobil.iett.gov.tr/tr/mobil/durakarama/" + input)
	bus_stops = get_filtered_nodes(r.text, ".table-search-result a")
	data = {}
	for bus_stop in bus_stops:
		data[bus_stop.get("href")] = bus_stop.text

	count = 0
	for url, name in data.items():
		print "[", count, "]", name

		count += 1

	choice = int(raw_input("Please enter the stop index you want: "))

	return  data.keys()[choice]

start = find_bus_stop(raw_input("Please enter start bus stop: "))
finish = find_bus_stop(raw_input("Please enter finish bus stop: "))

start_buses =  set(get_routes_by_stop(start))
finished_buses = set(get_routes_by_stop(finish))

buses = filter(None, start_buses & finished_buses)

print "You can use these buses: ", ", ".join(buses)