Simple query request with Wolfram api

Wolfram Alpha is really a good website if you want to perform some computation or ask some basic query like “distance between Paris and London”.So I wanted to test out Wolfram API (alpha)
The following program gets a query from the user and retrieves a result. Ofcourse, you will need an app id which could be got from wolfram.com website.

import urllib2
import urllib
import httplib
from xml.etree import ElementTree as etree

class wolfram(object):
    def __init__(self, appid):
        self.appid = appid
        self.base_url = 'http://api.wolframalpha.com/v2/query?'
        self.headers = {'User-Agent':None}

    def _get_xml(self, ip):
        url_params = {'input':ip, 'appid':self.appid}
        data = urllib.urlencode(url_params)
        req = urllib2.Request(self.base_url, data, self.headers)
        xml = urllib2.urlopen(req).read()
        return xml

    def _xmlparser(self, xml):
        data_dics = {}
        tree = etree.fromstring(xml)
        #retrieving every tag with label 'plaintext'
        for e in tree.findall('pod'):
            for item in [ef for ef in list(e) if ef.tag=='subpod']:
                for it in [i for i in list(item) if i.tag=='plaintext']:
                    if it.tag=='plaintext':
                        data_dics[e.get('title')] = it.text
        return data_dics

    def search(self, ip):
        xml = self._get_xml(ip)
        result_dics = self._xmlparser(xml)
        #return result_dics 
        #print result_dics
        print result_dics['Result']

if __name__ == "__main__":
    appid = sys.argv[0]
    query = sys.argv[1]
    w = wolfram(appid)
    w.search(query)
      

One thought on “Simple query request with Wolfram api

  1. You forgot to ‘import sys’ at the top and the sys.argv indexes are off by one at the bottom if you want to run this as an independent python script (should be 1 and 2 instead of 0 and 1). Very useful script once I got it working. Thanks.

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