h/plugins/wolframalpha.py

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import re
from util import hook, http
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@hook.command('wa')
@hook.command
def wolframalpha(inp, bot=None):
".wa/.wolframalpha <query> -- computes <query> using Wolfram Alpha"
api_key = bot.config.get("api_keys", {}).get("wolframalpha", None)
if api_key is None:
return "error: no api key set"
url = 'http://api.wolframalpha.com/v2/query?format=plaintext'
result = http.get_xml(url, input=inp, appid=api_key)
pod_texts = []
for pod in result.xpath("//pod"):
title = pod.attrib['title']
if pod.attrib['id'] == 'Input':
continue
results = []
for subpod in pod.xpath('subpod/plaintext/text()'):
subpod = subpod.strip().replace('\\n', '; ')
subpod = re.sub(r'\s+', ' ', subpod)
if subpod:
results.append(subpod)
if results:
pod_texts.append(title + ': ' + '|'.join(results))
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ret = '. '.join(pod_texts)
if not pod_texts:
return 'no results'
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ret = re.sub(r'\\(.)', r'\1', ret)
def unicode_sub(match):
return unichr(int(match.group(1), 16))
ret = re.sub(r'\\:([0-9a-z]{4})', unicode_sub, ret)
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if len(ret) > 430:
ret = ret[:ret.rfind(' ', 0, 430)]
ret = re.sub(r'\W+$', '', ret) + '...'
if not ret:
return 'no results'
return ret