Edward Betts
05eec29b7d
fetch_prices now returns {'price': ..., 'seats': ...} per departure.
Seat count (labelled "N at this price") is shown below the fare — it
reflects price-band depth rather than total remaining seats. A yellow
notice is shown when the API returns journeys but all prices are null
(tickets not yet on sale).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
214 lines
7.4 KiB
Python
214 lines
7.4 KiB
Python
"""
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Scrape Eurostar timetable via httpx and fetch prices via the GraphQL API.
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Timetable: route-specific pages are Next.js SSR — all departure data is
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embedded in <script id="__NEXT_DATA__"> as JSON, so no browser / JS needed.
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URL pattern:
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https://www.eurostar.com/uk-en/travel-info/timetable/
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{origin_id}/{dest_id}/{origin_slug}/{dest_slug}?date=YYYY-MM-DD
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Data path: props.pageProps.pageData.liveDepartures[]
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.origin.model.scheduledDepartureDateTime → London departure
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.destination.model.scheduledArrivalDateTime → destination arrival
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(already filtered to the requested stop, not the final stop)
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Prices: POST https://site-api.eurostar.com/gateway (GraphQL, operationName
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NewBookingSearch). The `journeys[].fares[]` array contains one entry per
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class of service; we extract the Eurostar Standard (classOfService.code ==
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"STANDARD") displayPrice for 1 adult, in GBP.
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"""
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import json
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import random
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import re
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import string
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import httpx
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import requests
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DEFAULT_UA = (
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"Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 "
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"(KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36"
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)
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ORIGIN_STATION_ID = '7015400'
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ORIGIN_STATION_SLUG = 'london-st-pancras-intl'
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TIMETABLE_BASE_URL = 'https://www.eurostar.com/uk-en/travel-info/timetable'
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DESTINATION_STATION_IDS = {
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'Paris Gare du Nord': '8727100',
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'Brussels Midi': '8814001',
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'Lille Europe': '8722326',
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'Amsterdam Centraal': '8400058',
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'Rotterdam Centraal': '8400530',
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}
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def _slugify_station_name(name: str) -> str:
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return re.sub(r'[^a-z0-9]+', '-', name.lower()).strip('-')
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def search_url(destination: str, travel_date: str) -> str:
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dest_id = DESTINATION_STATION_IDS[destination]
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return (
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f'https://www.eurostar.com/search/uk-en'
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f'?adult=1&origin={ORIGIN_STATION_ID}&destination={dest_id}&outbound={travel_date}'
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)
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def timetable_url(destination: str) -> str:
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dest_id = DESTINATION_STATION_IDS[destination]
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dest_slug = _slugify_station_name(destination)
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return (
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f'{TIMETABLE_BASE_URL}/{ORIGIN_STATION_ID}/{dest_id}/'
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f'{ORIGIN_STATION_SLUG}/{dest_slug}'
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)
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def _hhmm(dt_str: str | None) -> str | None:
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"""'2026-03-30 09:34:00' → '09:34'"""
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if not dt_str:
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return None
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m = re.search(r'(\d{2}):(\d{2}):\d{2}$', dt_str)
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return f"{m.group(1)}:{m.group(2)}" if m else None
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def _parse(html: str, destination: str) -> list[dict]:
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m = re.search(r'<script id="__NEXT_DATA__"[^>]*>(.*?)</script>', html, re.DOTALL)
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if not m:
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return []
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data = json.loads(m.group(1))
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departures = data['props']['pageProps']['pageData']['liveDepartures']
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services = []
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for dep in departures:
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dep_time = _hhmm(dep['origin']['model']['scheduledDepartureDateTime'])
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arr_time = _hhmm(dep['destination']['model']['scheduledArrivalDateTime'])
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if dep_time and arr_time:
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carrier = dep.get('model', {}).get('carrier', 'ES')
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number = dep.get('model', {}).get('trainNumber', '')
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services.append({
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'depart_st_pancras': dep_time,
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'arrive_destination': arr_time,
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'destination': destination,
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'train_number': f"{carrier} {number}" if number else '',
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})
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return sorted(services, key=lambda s: s['depart_st_pancras'])
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def fetch(destination: str, travel_date: str,
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user_agent: str = DEFAULT_UA) -> list[dict]:
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url = timetable_url(destination)
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headers = {
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'User-Agent': user_agent,
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'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
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'Accept-Language': 'en-GB,en;q=0.9',
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}
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with httpx.Client(headers=headers, follow_redirects=True, timeout=20) as client:
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r = client.get(url, params={'date': travel_date})
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r.raise_for_status()
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return _parse(r.text, destination)
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# ---------------------------------------------------------------------------
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# Price fetching via site-api.eurostar.com GraphQL
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# ---------------------------------------------------------------------------
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_GATEWAY_URL = 'https://site-api.eurostar.com/gateway'
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# Minimal query requesting only timing + Eurostar Standard fare price.
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# Variable names and inline argument names match what the site sends so the
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# server-side query planner sees a familiar shape.
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_GQL_PRICES = (
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"query NewBookingSearch("
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"$origin:String!,$destination:String!,$outbound:String!,"
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"$currency:Currency!,$adult:Int,"
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"$filteredClassesOfService:[ClassOfServiceEnum]"
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"){"
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"journeySearch("
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"outboundDate:$outbound origin:$origin destination:$destination"
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" adults:$adult currency:$currency"
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" productFamilies:[\"PUB\"] contractCode:\"EIL_ALL\""
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" adults16Plus:0 children:0 youths:0 children4Only:0 children5To11:0"
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" infants:0 adultsWheelchair:0 childrenWheelchair:0 guideDogs:0"
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" wheelchairCompanions:0 nonWheelchairCompanions:0"
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" isAftersales:false multipleFlexibility:true showAllSummatedFares:false"
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" seniorsAges:[] prioritiseShortHaulODTrains:true"
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"){"
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"outbound{"
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"journeys("
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"hideIndirectTrainsWhenDisruptedAndCancelled:false"
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" hideDepartedTrains:true"
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" hideExternalCarrierTrains:true"
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" hideDirectExternalCarrierTrains:true"
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"){"
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"timing{departureTime:departs __typename}"
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"fares(filteredClassesOfService:$filteredClassesOfService){"
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"classOfService{code __typename}"
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"prices{displayPrice __typename}"
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"seats __typename"
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"}"
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"__typename"
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"}"
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"__typename"
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"}"
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"__typename"
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"}"
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"}"
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)
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def _generate_cid() -> str:
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chars = string.ascii_letters + string.digits
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return 'SRCH-' + ''.join(random.choices(chars, k=22))
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def fetch_prices(destination: str, travel_date: str) -> dict[str, dict]:
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"""
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Return Eurostar Standard price and seat availability for every departure on travel_date.
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Result: {depart_st_pancras: {'price': int_or_None, 'seats': int_or_None}}
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price is None when unavailable/not yet on sale; seats is the number of
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Standard seats currently available for sale.
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"""
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dest_id = DESTINATION_STATION_IDS[destination]
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headers = {
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'User-Agent': DEFAULT_UA,
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'Content-Type': 'application/json',
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'Accept': '*/*',
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'Accept-Language': 'en-GB',
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'Referer': 'https://www.eurostar.com/',
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'x-platform': 'web',
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'x-market-code': 'uk',
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'x-source-url': 'search-app/',
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'cid': _generate_cid(),
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}
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payload = {
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'operationName': 'NewBookingSearch',
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'variables': {
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'origin': ORIGIN_STATION_ID,
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'destination': dest_id,
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'outbound': travel_date,
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'currency': 'GBP',
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'adult': 1,
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'filteredClassesOfService': ['STANDARD'],
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},
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'query': _GQL_PRICES,
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}
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resp = requests.post(_GATEWAY_URL, json=payload, headers=headers, timeout=20)
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resp.raise_for_status()
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data = resp.json()
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prices: dict[str, dict] = {}
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journeys = data['data']['journeySearch']['outbound']['journeys']
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for journey in journeys:
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dep = journey['timing']['departureTime']
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price = None
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seats = None
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for fare in journey['fares']:
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if fare['classOfService']['code'] == 'STANDARD':
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p = fare.get('prices')
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if p and p.get('displayPrice'):
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price = int(p['displayPrice'])
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seats = fare.get('seats')
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break
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prices[dep] = {'price': price, 'seats': seats}
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return prices
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