Update to work with Python 3

- Replace Mechanize with BeautifulSoup.
 - Adjust requirements.txt for updated dependencies.

models.py

@@ -1,5 +1,13 @@
-from mechanize import Browser
+#! /usr/bin/env python
+"""
+Database models for lolbot.
+"""
+
+from __future__ import print_function, unicode_literals
+
+import requests
 from datetime import datetime
+from bs4 import BeautifulSoup
 from sqlalchemy import (Column, String, Text, Integer, DateTime)
 from sqlalchemy.ext.declarative import (declarative_base)
 
@@ -59,9 +67,8 @@ class Url(Model):
         # populate the title from the URL if not given.
         if title is None:
             try:
-                br = Browser()
+                dom = BeautifulSoup(requests.get(self.url), 'html.parser')
-                br.open(self.url)
+                self.title = dom.title.string
-                self.title = br.title()
             except Exception:
                 self.title = ''
 

requirements.txt

@@ -1,9 +1,4 @@
 SQLAlchemy==1.0.9
-argparse==1.2.1
+beautifulsoup4==4.4.1
-irc==11.0.1
+irc==13.2
-jaraco.timing==1.1.5
+requests==2.8.1
-jaraco.util==10.6
-mechanize==0.2.5
-more-itertools==2.2
-six==1.10.0
-wsgiref==0.1.2