add error handling for broken unicode

README.md

@@ -4,7 +4,7 @@ It's like Sopel, except rewritten from scratch using Twisted as a base and over
 
 ## Requirements  
 Python 3.6+  
-Python packages: `twisted, python-dateutil, requests, bs4, wolfram, pyenchant, emoji, Pillow, xml2dict, ipython, numpy, numpngw`  
+Python packages: `twisted python-dateutil requests bs4 wolframalpha pyenchant emoji Pillow xml2dict ipython numpy numpngw`  
 
 ## Config  
 `nickname` - The nickname the bot will use.  

bot.py

@@ -616,6 +616,13 @@ class Fulvia(irc.IRCClient):
 		self.whoisIdle(nick, idle, signon)
 
 
+	def lineReceived(self, line):
+		"""Overridden to fix broken unicode issues."""
+		if bytes != str and isinstance(line, bytes):
+			line = line.decode('utf-8', errors='surrogateescape')
+		super().lineReceived(line)
+
+
 class FulviaWrapper():
 	"""
 	A wrapper class for Fulvia to provide default destinations for msg

modules/calc.py

@@ -41,8 +41,9 @@ def py(bot, trigger):
 	res = requests.get(uri + query)
 	res.raise_for_status()
 	answer = res.text
+	answer = answer[:2000]
 	if answer:
 		#bot.msg can potentially lead to 3rd party commands triggering.
-		bot.msg(answer)
+		bot.msg(answer, length=300)
 	else:
 		bot.reply('Sorry, no result.')