Use simpler syntax now supported by pmxbot.

wolframalpha/pmxbot.py

@@ -6,8 +6,13 @@ from pmxbot.core import command
 
 import wolframalpha
 
-@command("wolframalpha", aliases=('wa',), doc="Wolfram Alpha rules")
+
+@command(aliases='wolframalpha')
 def wa(client, event, channel, nick, rest):
+	"""
+	A free-text query resolver by Wolfram|Alpha. Returns the first
+	result, if available.
+	"""
 	client = wolframalpha.Client(pmxbot.config['Wolfram|Alpha API key'])
 	res = client.query(rest)
 	return next(res.results).text