Update text_sentiment_ngrams_tutorial.py

Creating .data folder.

Author: brianjo

beginner_source/text_sentiment_ngrams_tutorial.py

@@ -42,6 +42,9 @@
 import torchtext
 from torchtext.datasets import text_classification
 NGRAMS = 2
+mport os
+if not os.path.isdir('./.data'):
+	os.mkdir('./.data')
 train_dataset, test_dataset = text_classification.DATASETS['AG_NEWS'](
     root='./.data', ngrams=NGRAMS, vocab=None)
 BATCH_SIZE = 16