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generate.py
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generate.py
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from datetime import date
from functools import cached_property
from typing import List, Dict
from collections import defaultdict
from os import path
from csv import DictWriter
from dataclasses import dataclass
from gtfs.archive import load_feeds_and_summaries_from_archive
from gtfs.config import EARLIEST_DATE, LATEST_DATE, OUTPUT_PATH
from gtfs.models import ServiceExceptionType, Service
from gtfs.summarize import FeedSummary, TripSummary
from gtfs.time import (
DAYS_OF_WEEK,
is_early_am,
is_peak_am,
is_midday,
is_peak_pm,
is_evening_pm,
is_late_pm,
)
from gtfs.util import (
bucket_by,
date_range,
date_range_contains,
ensure_dir,
format_timedelta,
listify,
)
@dataclass(frozen=True)
class DaySummary(object):
line_id: str
route_id: str
trips: List[TripSummary]
def _filter_and_count_trips(self, predicate):
return len(list(filter(predicate, self.trips)))
@cached_property
def _most_stop_times(self):
return max((len(trip.stop_times) for trip in self.trips))
@cached_property
def total_trips(self):
return self._filter_and_count_trips(lambda t: True)
@cached_property
def early_am_trips(self):
return self._filter_and_count_trips(
lambda trip: is_early_am(trip.stop_times[-1].time)
)
@cached_property
def peak_am_trips(self):
return self._filter_and_count_trips(
lambda trip: is_peak_am(trip.stop_times[-1].time)
)
@cached_property
def midday_trips(self):
return self._filter_and_count_trips(
lambda trip: is_midday(trip.stop_times[-1].time)
or is_midday(trip.stop_times[0].time)
)
@cached_property
def peak_pm_trips(self):
return self._filter_and_count_trips(
lambda trip: is_peak_pm(trip.stop_times[0].time)
)
@cached_property
def evening_pm_trips(self):
return self._filter_and_count_trips(
lambda trip: is_evening_pm(trip.stop_times[0].time)
)
@cached_property
def late_pm_trips(self):
return self._filter_and_count_trips(
lambda trip: is_late_pm(trip.stop_times[0].time)
)
@cached_property
def express_trips(self):
if self.route_id == "CR-Newburyport":
return 0
return self._filter_and_count_trips(
lambda trip: len(trip.stop_times) < self._most_stop_times
)
@cached_property
def local_trips(self):
if self.route_id == "CR-Newburyport":
return self.total_trips
return self._filter_and_count_trips(
lambda trip: len(trip.stop_times) == self._most_stop_times
)
@cached_property
def typical_trips(self):
return self._filter_and_count_trips(
lambda trip: trip.service.schedule_typicality in (0, 1)
)
@cached_property
def atypical_trips(self):
return self._filter_and_count_trips(
lambda trip: trip.service.schedule_typicality in (2, 3, 4, 5)
)
@dataclass
class TripOnDate(object):
trip: TripSummary
date: date
def get_all_feeds_for_dates(from_date: date, to_date: date):
return list(
reversed(
[
feed
for (_, feed) in load_feeds_and_summaries_from_archive(
from_date, to_date
)
]
)
)
def service_runs_on_date(service: Service, date: date):
is_in_service_range = service.start_date <= date <= service.end_date
service_runs_on_day_of_week = DAYS_OF_WEEK[date.weekday()] in service.days
service_is_removed_by_exception = any(
(
ed.date == date and ed.exception_type == ServiceExceptionType.REMOVED
for ed in service.exception_dates
)
)
service_is_added_by_exception = any(
(
ed.date == date and ed.exception_type == ServiceExceptionType.ADDED
for ed in service.exception_dates
)
)
return service_is_added_by_exception or (
is_in_service_range
and service_runs_on_day_of_week
and not service_is_removed_by_exception
)
def get_feed_for_date(today: date, chron_feeds: List[FeedSummary]):
for feed in reversed(chron_feeds):
if date_range_contains(
(feed.feed_info.start_date, feed.feed_info.end_date),
today,
):
return feed
@listify
def get_trips_on_date(today: date, chron_feeds: List[FeedSummary]):
feed_for_date = get_feed_for_date(today, chron_feeds)
for trip in feed_for_date.trips:
if service_runs_on_date(trip.service, today):
yield TripOnDate(trip=trip, date=today)
def get_trips_for_date_range(
from_date: date,
to_date: date,
chron_feeds: List[FeedSummary],
):
all_trips_by_route_id = defaultdict(list)
day_summaries = defaultdict(list)
for today in date_range(from_date, to_date):
all_trips_for_date = sorted(
get_trips_on_date(today, chron_feeds),
key=lambda tod: tod.trip.stop_times[0].time,
)
trip_buckets = bucket_by(all_trips_for_date, lambda tod: tod.trip.route_id)
for (route_id, trips) in trip_buckets.items():
all_trips_by_route_id[route_id] += trips
day_summary = DaySummary(
line_id=trips[0].trip.line.id,
route_id=route_id,
trips=[t.trip for t in trips],
)
day_summaries[today].append(day_summary)
return all_trips_by_route_id, day_summaries
def write_trips_csv_for_route_id(route_id: str, trips_on_date: List[TripOnDate]):
ensure_dir(path.join(OUTPUT_PATH, "lines"))
csv_path = path.join(OUTPUT_PATH, "lines", f"{route_id}.csv")
with open(csv_path, "w") as csv_file:
writer = DictWriter(
csv_file,
fieldnames=[
"date",
"time",
"trip_id",
"line_id",
"route_id",
"route_pattern_id",
"route_name",
"route_pattern_name",
"service_id",
"service_typicality",
"direction",
"from_station",
"to_station",
],
)
writer.writeheader()
for trip_on_date in trips_on_date:
trip = trip_on_date.trip
date = trip_on_date.date
writer.writerow(
{
"date": date.strftime("%Y-%m-%d"),
"time": format_timedelta(trip.stop_times[0].time),
"trip_id": trip.id,
"line_id": trip.line.id,
"route_id": trip.route_id,
"route_pattern_id": trip.route_pattern_id,
"route_name": trip.route_name,
"route_pattern_name": trip.route_pattern_name,
"service_id": trip.service.id,
"service_typicality": trip.service.schedule_typicality,
"direction": trip.direction,
"from_station": trip.stop_times[0].station_name,
"to_station": trip.stop_times[-1].station_name,
}
)
def write_summary_csv(trips_by_date: Dict[date, List[DaySummary]]):
csv_path = path.join(OUTPUT_PATH, "summary.csv")
with open(csv_path, "w") as csv_file:
writer = DictWriter(
csv_file,
[
"date",
"route_id",
"total_trips",
"early_am_trips",
"peak_am_trips",
"midday_trips",
"peak_pm_trips",
"evening_pm_trips",
"late_pm_trips",
"local_trips",
"express_trips",
"typical_trips",
"atypical_trips",
],
)
writer.writeheader()
for (date, day_summaries) in trips_by_date.items():
for day_summary in day_summaries:
writer.writerow(
{
"date": date.strftime("%Y-%m-%d"),
"route_id": day_summary.route_id,
"total_trips": day_summary.total_trips,
"early_am_trips": day_summary.early_am_trips,
"peak_am_trips": day_summary.peak_am_trips,
"midday_trips": day_summary.midday_trips,
"peak_pm_trips": day_summary.peak_pm_trips,
"evening_pm_trips": day_summary.evening_pm_trips,
"late_pm_trips": day_summary.late_pm_trips,
"local_trips": day_summary.local_trips,
"express_trips": day_summary.express_trips,
"typical_trips": day_summary.typical_trips,
"atypical_trips": day_summary.atypical_trips,
}
)
def main():
ensure_dir(OUTPUT_PATH)
feeds = get_all_feeds_for_dates(EARLIEST_DATE, LATEST_DATE)
trips_by_route_id, day_summaries = get_trips_for_date_range(
EARLIEST_DATE,
LATEST_DATE,
feeds,
)
write_summary_csv(day_summaries)
for (route_id, trips_for_route) in trips_by_route_id.items():
write_trips_csv_for_route_id(route_id, trips_for_route)
if __name__ == "__main__":
main()