2010-02-01 05:49:52 +00:00
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import re
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import urllib2
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from lxml import html
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from util import hook
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@hook.command
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@hook.command('wa')
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def wolframalpha(inp):
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".wa/.wolframalpha <query> -- scrapes Wolfram Alpha's" \
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"results for <query>"
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if not inp:
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2010-02-01 05:55:22 +00:00
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return wolframalpha.__help__
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2010-02-01 05:49:52 +00:00
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url = "http://www.wolframalpha.com/input/?i=%s&asynchronous=false"
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h = html.parse(url % urllib2.quote(inp, safe=''))
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pods = h.xpath("//div[@class='pod ']")
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pod_texts = []
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for pod in pods:
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heading = pod.find('h1/span').text_content().strip()
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results = []
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for image in pod.xpath('div/div[@class="output"]/img'):
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alt = image.attrib['alt'].strip()
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alt = alt.replace('\\n', '; ')
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alt = re.sub(r'\s+', ' ', alt)
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if alt:
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results.append(alt)
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if results:
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pod_texts.append(heading + ' ' + '|'.join(results))
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ret = '. '.join(pod_texts[1:]) # first pod is the input
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if not ret:
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if not pod_texts:
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return 'no results'
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ret = pod_texts[0] # definite integrals have only the result pod first
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if len(ret) > 430:
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ret = ret[:ret.rfind(' ', 0, 430)]
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ret = re.sub(r'\W+$', '', ret) + '...'
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if not ret:
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return 'no result'
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return ret
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