tildebot | Add badword filter to word-based puzzles

The list isn't "complete" in any sense, and it may seem somewhat arbitrary,
but I didn't want to just dump a massive file I found online into it. It
should work perfectly if you want to do that though.

Code/irc/dict_puzzle.py

@@ -4,9 +4,19 @@ import inflect
 
 p = inflect.engine()
 dictionary = "/usr/share/dict/american-english-small"
+BAD_WORDS_FILE = "badwords.txt"
+
+def get_wordlist():
+    # I feel weird calling this "get_wordlist" when it's a generator without calling out that I do in fact realise it's weird - ~deltawitch
+    with open(BAD_WORDS_FILE, "r") as fp:
+        bad_words = set(fp)
+
+    for word in open(dictionary).readlines():
+        if "'" not in word and word not in bad_words:
+            yield word.rstrip()
 
 def get_puzzle():
-    dict_words = [word.rstrip() for word in open(dictionary).readlines() if "'" not in word]
+    dict_words = list(get_wordlist())
     words = random.sample(dict_words, 3)
     key = random.randrange(0,3) #get values 1-3
     puzzle = "When alphebetized, what is the " + p.ordinal(p.number_to_words(key+1)) + " in " + ", ".join(words)
@@ -15,7 +25,7 @@ def get_puzzle():
     return [answer, puzzle]
 
 def get_anagram(maxlen = 6):
-    dict_words = [word.rstrip() for word in open(dictionary).readlines() if "'" not in word and len(word) > 2 and len(word) <= maxlen+1]
+    dict_words = [word for word in get_wordlist() if len(word) > 2 and len(word) <= maxlen+1]
     word = random.choice(dict_words)
     while True:
         anagram = ''.join(random.sample(word, len(word)))