Feed2json: Difference between revisions

Latest revision as of 21:46, 7 October 2012

Useful proxy CGI to read an RSS feed from Javascript

Python's JSON module will take of many things, by datetime and time objects mess it up. A custom "jsonify" function takes care of the translation in these cases (following this example)

#!/usr/bin/env python
#-*- coding:utf-8 -*-

import cgitb; cgitb.enable()
import cgi, urllib
import feedparser, json, time, datetime


request = cgi.FieldStorage()
feedurl = request.getvalue("f", "http://api.flickr.com/services/feeds/photos_public.gne")

q = {}
for key in request:
    if key != "f":
        q[key] = request.getvalue(key)
if q:
    feedurl += "?"+urllib.urlencode(q)

def jsonify(obj):
    if (type(obj) == time.struct_time):
        obj = datetime.datetime.fromtimestamp(time.mktime(obj))
    if hasattr(obj, 'isoformat'):
        return obj.isoformat()
    else:
        raise TypeError, 'Object of type %s with value of %s is not JSON serializable' % (type(obj), repr(obj))

print "Content-type: application/json"
print
feed = feedparser.parse(feedurl)
print json.dumps(feed, default=jsonify)

@@ Line 1: / Line 1: @@
 Useful proxy CGI to read an RSS feed from Javascript
+Python's JSON module will take of many things, by datetime and time objects mess it up. A custom "jsonify" function takes care of the translation in these cases (following [http://stackoverflow.com/questions/455580/json-datetime-between-python-and-javascript this example])
 <source lang="python">
@@ Line 21: / Line 23: @@
 def jsonify(obj):
-    """ http://stackoverflow.com/questions/455580/json-datetime-between-python-and-javascript"""
      if (type(obj) == time.struct_time):
          obj = datetime.datetime.fromtimestamp(time.mktime(obj))