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search_operational_stations.py
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search_operational_stations.py
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import re
import os
import time
import json
from datetime import datetime as dt, timedelta
import urllib2
import httplib
from query_yes_no import query_yes_no
def search_operational_stations():
"""Find active HiSPARC shower and weather stations"""
if os.path.isfile('active_station_IDs.txt'):
read_list_from_file()
else:
print ''
print 'You do not have a list with operational stations in your current working directory.'
update = query_yes_no('Do you want to update/create the list with operational stations?')
print ''
if update == True:
active_shower, active_weather = get_active_stations()
with open('active_station_IDs.txt', 'w') as file:
file.write('active_shower = [')
file.write(', '.join(str(id) for id in active_shower))
file.write(']\nactive_weather = [')
file.write(', '.join(str(id) for id in active_weather))
file.write(']')
read_list_from_file()
def read_list_from_file():
"""Read the file with the list of active stations"""
print ''
print ('The last check for operational stations was at: ' +
time.ctime(os.path.getctime('active_station_IDs.txt')))
print ''
execfile('active_station_IDs.txt', globals())
print '- At that time the following HiSPARC stations were operational:'
print active_shower
print ''
print '- And the following WEATHER stations were operational:'
print active_weather
print ''
def get_active_stations():
"""Check which of the given stations had any shower or weather data yesterday"""
station_ids = get_station_ids()
active_shower = active_shower_station(station_ids)
active_weather = active_weather_station(station_ids)
return active_shower, active_weather
def active_shower_station(station_ids):
"""Check which of the given station ids had any shower data yesterday"""
url_template = "http://data.hisparc.nl/api/station/%s/data/" + yesterday_url()
active_ids = [id for id in station_ids if get_json(url_template % id)]
return active_ids
def active_weather_station(station_ids):
"""Check which of the given station ids had any weather data yesterday"""
url_template = "http://data.hisparc.nl/api/station/%s/weather/" + yesterday_url()
active_ids = [id for id in station_ids if get_json(url_template % id)]
return active_ids
def get_station_ids():
"""Get list of all station ids from the API Stations List page"""
url = "http://data.hisparc.nl/api/stations"
stations_json = get_json(url)
station_ids = [station['number'] for station in stations_json]
return station_ids
def get_json(url):
"""Get the json from url and load it into a Python object"""
json_data = json.loads(urllib2.urlopen(url).read())
return json_data
def yesterday_url():
"""Make the part of the url for the date (yesterday)"""
yesterday = dt.now() - timedelta(days=1)
url = "%s/%s/%s/" % (yesterday.year, yesterday.month, yesterday.day)
return url
if __name__ == '__main__':
search_operational_stations()