오른손의 좋은 세상만들기

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*USGS Json data structure

http://earthquake.usgs.gov/earthquakes/feed/v1.0/geojson_detail.php

*Past Day M2.5+ Earthquakes

http://earthquake.usgs.gov/earthquakes/feed/v1.0/summary/2.5_day.geojson

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# 

import urllib2
import json

def printResults(data):
  # Use the json module to load the string data into a dictionary
  theJSON = json.loads(data)
  
  # now we can access the contents of the JSON like any other Python object
  if "title" in theJSON["metadata"]:
    print theJSON["metadata"]["title"]
  
  # output the number of events, plus the magnitude and each event name  
  count = theJSON["metadata"]["count"];
  print "Yesterday Total " + str(count) + " events recorded"
  
  # for each event, print the place where it occurred
#  for i in theJSON["features"]:
#    print i["properties"]["place"]

  # print the events that only have a magnitude greater than 4
  print"\n"
  print "Magnitude greater than 4:\n"
  for i in theJSON["features"]:
    if i["properties"]["mag"] >= 4.0:
      print "%2.1f" % i["properties"]["mag"], i["properties"]["place"]

  # print only the events where at least 1 person reported feeling something
  print "\n"
  print "Events that were felt:\n"
  for i in theJSON["features"]:
    feltReports = i["properties"]["felt"]
    placeOccur = i["properties"]["place"]
    if (feltReports != None) & (feltReports > 0):
        if (i["properties"]["place"].find("California") > 0 or i["properties"]["place"].find("Mexico") > 0) :
		    print "*****************************************"
        print "%2.1f" % i["properties"]["mag"], i["properties"]["place"], " reported " + str(feltReports) + " times"
 
  
def main():
  # define a variable to hold the source URL
  # In this case we'll use the free data feed from the USGS
  # This feed lists all earthquakes for the last day larger than Mag 2.5
  #Fred: http://earthquake.usgs.gov/earthquakes/feed/v1.0/geojson.php
  urlData = "http://earthquake.usgs.gov/earthquakes/feed/v1.0/summary/2.5_day.geojson"
  
  # Open the URL and read the data
  webUrl = urllib2.urlopen(urlData)
  print ("USGS is alive, response=%d" % webUrl.getcode())
  if (webUrl.getcode() == 200):
    data = webUrl.read()
    # print out our customized results
    printResults(data)
  else:
    print "Received an error from server, cannot retrieve results " + str(webUrl.getcode())

if __name__ == "__main__":
  main()

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sample file

jsondata_finished.py