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import requests
import csv
import datetime
import calendar
import time
i=0
# Change the range depending on how long you like to record the data
for i in range (0,50):
# Set up the request. Get all locations since last request.
url = 'http://meri-test.digitraffic.fi/api/v1/locations/latest?from='
sleep = 15
start = (calendar.timegm(time.gmtime()) - sleep) * 1000
# Do the request and read the response
try:
r = requests.get(url + str(start))
j = r.json()
# Go through all the features in the response, format timestamp properly and write to csv
for each in j['features']:
epoch = (each['properties']['timestampExternal']) / 1000
timestamp = datetime.datetime.utcfromtimestamp(epoch)
t='{:%Y-%m-%d %H:%M:%S}'.format(timestamp)
values = each['mmsi'], each['geometry']['coordinates'][0], each['geometry']['coordinates'][1], t
with open(r'ships.csv', 'a') as f:
writer = csv.writer(f, quoting=csv.QUOTE_NONE, lineterminator='\n')
writer.writerow(values)
# This is here so that the code won't fail if URL doesn't respond
except:
print('URL not responding')
# Add to range, print where the request is and wait for next request
i+=1
print(i)
time.sleep(sleep)
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