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Wolfram Alpha (no API needed now)
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2 changed files with 70 additions and 4 deletions
66
searx/engines/wolframalpha_noapi.py
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66
searx/engines/wolframalpha_noapi.py
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# WolframAlpha (Maths)
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#
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# @website http://www.wolframalpha.com/
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#
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# @using-api no
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# @results HTML, JS
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# @stable no
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# @parse answer
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import re
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import json
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from urllib import urlencode
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from lxml import html
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from searx.engines.xpath import extract_text
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# search-url
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url = 'http://www.wolframalpha.com/'
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search_url = url+'input/?{query}'
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# do search-request
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def request(query, params):
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params['url'] = search_url.format(query=urlencode({'i': query}))
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return params
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# tries to find answer under the pattern given
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def extract_answer(script_list, pattern):
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answer = None
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# get line that matches the pattern
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for script in script_list:
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try:
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line = re.search(pattern, script.text_content()).group(1)
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except AttributeError:
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continue
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# extract answer from json
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answer = line[line.find('{') : line.rfind('}')+1]
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answer = json.loads(answer.encode('unicode-escape'))
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answer = answer['stringified'].decode('unicode-escape')
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return answer
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# get response from search-request
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def response(resp):
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dom = html.fromstring(resp.text)
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# the answer is inside a js script
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scripts = dom.xpath('//script')
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results = []
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# answer can be located in different 'pods', although by default it should be in pod_0200
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answer = extract_answer(scripts, 'pod_0200\.push(.*)\n')
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if not answer:
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answer = extract_answer(scripts, 'pod_0100\.push(.*)\n')
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if answer:
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results.append({'answer': answer})
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else:
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results.append({'answer': answer})
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return results
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@ -302,11 +302,11 @@ engines:
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# You can use the engine using the official stable API, but you need an API key
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# See : http://products.wolframalpha.com/api/
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# - name : wolframalpha
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# shortcut : wa
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# engine : wolframalpha_api
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- name : wolframalpha
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shortcut : wa
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engine : wolframalpha_noapi
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# api_key: 'apikey' # required!
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# timeout: 6.0
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timeout: 6.0
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#The blekko technology and team have joined IBM Watson! -> https://blekko.com/
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# - name : blekko images
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