Create a static map of nearby public transport stops using Helsinki area Reittiopas API and Google Static Maps API

busstops.py

#!/usr/env/bin/python
# Create a static map of nearby public transport stops using Helsinki area Reittiopas API and Google Static Maps API
# pip install requests if needed
import requests
import sys
import urllib
import string

googleurl = "https://maps.googleapis.com/maps/api/staticmap?center=%s,%s&zoom=%d&scale=2&size=640x640&maptype=roadmap"
# Get API key for Google Static Maps API and documentation at
# https://developers.google.com/maps/documentation/static-maps/?hl=en
googlekey = "YOUR-OWN-API-KEY"

markertemplate = "&markers=color:green%%7Clabel:%s%%7C%s,%s"

# HSL Reittiopas API credentials and instructions at 
# http://developer.reittiopas.fi/pages/en/home.php
hsluser = "YOUR-USERNAME"
hslpass = "YOUR-PASSWORd"

class HslUrls(object):
	"""Helper class to generate HSL API urls"""

	def __init__(self,user,password):
		self.user = user
		self.password = password
		self.baseurl = "http://api.reittiopas.fi/hsl/prod/?request="

	def nearby_stops(self,longitude,latitude):
		"""Nearby stops API, not epsg_out and epsg_in to change to coordinate system Google uses
		note also latitude and longitude are in different order for these two APIs"""
		url = "%sstops_area&epsg_in=4326&epsg_out=4326&center_coordinate=%s,%s&user=%s&pass=%s" % (self.baseurl,latitude,longitude,self.user,self.password)
		return url

if __name__ == '__main__':
	# example has Helsinki railway station coordinates
	# change it to something more interesting/relevant
	longitude = "60.1719"
	latitude = "24.9414"
	# zoom level 15
	zoomlevel = 15
	hu = HslUrls(hsluser,hslpass)
	# make a request to Reittiopas API  
	r = requests.get(hu.nearby_stops(longitude,latitude))
	stops = r.json()
	# handle the resulting json, turn it into dictionary {"bus stop code": <coordinates>}
	# remember to reverse coordinates received from Reittiopas API
	l = dict([(s["codeShort"],s["coords"].split(",")[::-1]) for s in stops if len(s["codeShort"]) > 0])
	baseurl = googleurl % (longitude,latitude,zoomlevel)
	# create markers, add an uppercase label to everyone as a marker and the coordinates
	markers = "".join([markertemplate % (k[0], l[k[1]][0],l[k[1]][1]) for k in zip(string.uppercase,l.keys())])
	keystr = "&key=%s" % googlekey
	# print out the resulting url
	print baseurl + markers + keystr
	# run with ```$ python busstops.py| open``` OS X to show resulting map on browser