get_wunderground_data.py

#!/usr/bin/python
#
# Get weather data from weather underground
# to graph into cacti
#
# Author: Cryson
# Date: 12/12/2016
#

import os
import json
import urllib2
import ConfigParser
import datetime
import time


def getWeatherCondition(city) :
	global jsondata 
	try :
		url = "http://api.wunderground.com/api/"
		url += "%s/conditions/q/%s/" % (user_apiid, user_state)
		url += "%s.json" % city  
		req = urllib2.Request(url)
		response = urllib2.urlopen(req)
		jsondata = response.read()
		return jsondata
	except Exception :
		print("Could not get weather data")
		return response.read()


def checkcache_mtime():
	global minutes
	epoch = os.path.getmtime(cachefile)
	currenttime = time.time()
	seconds = currenttime - epoch
	minutes = seconds // 60 % 60


def pull_weather_json():
	weather = getWeatherCondition(user_city)
	w = json.loads(weather)

	#Grab Weather Data from Json into variables
	# name = w['current_observation']['display_location']['city']
	currenttemp = float(w['current_observation']['temp_f'])
	atmospressure = float(w['current_observation']['pressure_in'])
	windspeed = float(w['current_observation']['wind_mph'])
	# winddir = w['current_observation']['wind_dir']
	# timeepoch = float(w['current_observation']['local_epoch'])
	# realtime = datetime.datetime.fromtimestamp(timeepoch).strftime('%c')
	humidity = w['current_observation']['relative_humidity']
	humidity = humidity[:-1]
	humidity = float(humidity)
	feels_like = float(w['current_observation']['feelslike_f'])
	dewpoint = float(w['current_observation']['dewpoint_f'])
	# outsideweather = w['current_observation']['weather']

	# create cache file
	f = open(cachefile, 'w')
	f.write("DEW:%.2f CURRTEMP:%.2f FEELS:%.2f HUM:%.2f WINDSP:%.2f PRESS:%.2f" % (dewpoint,
	                                                                               currenttemp, feels_like, humidity, windspeed, atmospressure))
	f.close()

	# print cache file
	f = open(cachefile, 'r')
	contents = f.read()
	print(contents)
	f.close()


# MAIN
scriptpath = os.path.dirname(os.path.realpath(__file__)) 

Config = ConfigParser.ConfigParser()
Config.read('%s/config.ini' % scriptpath)

user_apiid = Config.get('weather_settings', 'user_apiid')
user_city = Config.get('weather_settings', 'user_city')
user_state = Config.get('weather_settings', 'user_state')
cachefile = Config.get('weather_settings', 'cachefile')

if os.path.exists(cachefile):
	checkcache_mtime()
	if minutes > 15:
		pull_weather_json()
	elif minutes < 15:
		f = open(cachefile, 'r')
		contents = f.read()
		print(contents)
		f.close()
else:
	pull_weather_json()