Fix issue with nltk data not downloading

chatterbot/utils.py

@@ -94,26 +94,15 @@ def nltk_download_corpus(corpus_name):
     """
     from nltk.data import find
     from nltk import download
-    import os
 
     # Download the wordnet data only if it is not already downloaded
     zip_file = '{}.zip'.format(corpus_name)
     downloaded = False
-    wordnet_path = None
-    if os.name == 'nt':
-        wordnet_path = os.path.join(
-            os.getenv('APPDATA'), 'nltk_data', 'corpora', zip_file
-        )
-    else:
-        wordnet_path = os.path.join(
-            os.path.expanduser('~'), 'nltk_data', 'corpora', zip_file
-        )
 
     try:
-        if not os.path.isfile(wordnet_path):
-            find(zip_file)
+        find(zip_file)
     except LookupError:
-        download('wordnet')
+        download(corpus_name)
         downloaded = True
 
     return downloaded

tests/logic_adapter_tests/test_closest_meaning.py

@@ -20,6 +20,9 @@ def setUp(self):
         self.adapter.set_chatbot(MockChatBot())
 
     def test_no_choices(self):
+        """
+        An exception should be raised if there is no data in the database.
+        """
         self.adapter.chatbot.storage.filter = MagicMock(return_value=[])
         statement = Statement('Hello')
 

tests/test_utils.py

@@ -17,6 +17,7 @@ def test_remove_stop_words(self):
         from chatterbot.utils import nltk_download_corpus
 
         nltk_download_corpus('stopwords')
+
         tokens = ['this', 'is', 'a', 'test', 'string']
         words = utils.remove_stopwords(tokens, 'english')