title: gensim Getting Started Error: No such file or directory: 'text8'
body: <p>I am learning about word2vec and GloVe model in python so I am going through this available <a href="http://textminingonline.com/getting-started-with-word2vec-and-glove-in-python" rel="noreferrer">here</a>. </p>
  
  <p>After I compiled these code step by step in Idle3:</p>
  
  <pre><code>&gt;&gt;&gt;from gensim.models import word2vec
  &gt;&gt;&gt;import logging
  &gt;&gt;&gt;logging.basicConfig(format='%(asctime)s : %(levelname)s : %(message)s', level=logging.INFO)
  &gt;&gt;&gt;sentences = word2vec.Text8Corpus('text8')
  &gt;&gt;&gt;model = word2vec.Word2Vec(sentences, size=200)
  </code></pre>
  
  <p>I am getting this error : </p>
  
  <pre><code>2017-01-13 11:15:41,471 : INFO : collecting all words and their counts
  Traceback (most recent call last):
    File "&lt;pyshell#4&gt;", line 1, in &lt;module&gt;
      model = word2vec.Word2Vec(sentences, size=200)
    File "/usr/local/lib/python3.5/dist-packages/gensim/models/word2vec.py", line 469, in __init__
      self.build_vocab(sentences, trim_rule=trim_rule)
    File "/usr/local/lib/python3.5/dist-packages/gensim/models/word2vec.py", line 533, in build_vocab
      self.scan_vocab(sentences, progress_per=progress_per, trim_rule=trim_rule)  # initial survey
    File "/usr/local/lib/python3.5/dist-packages/gensim/models/word2vec.py", line 545, in scan_vocab
      for sentence_no, sentence in enumerate(sentences):
    File "/usr/local/lib/python3.5/dist-packages/gensim/models/word2vec.py", line 1536, in __iter__
      with utils.smart_open(self.fname) as fin:
    File "/usr/local/lib/python3.5/dist-packages/smart_open-1.3.5-py3.5.egg/smart_open/smart_open_lib.py", line 127, in smart_open
      return file_smart_open(parsed_uri.uri_path, mode)
    File "/usr/local/lib/python3.5/dist-packages/smart_open-1.3.5-py3.5.egg/smart_open/smart_open_lib.py", line 558, in file_smart_open
      return open(fname, mode)
  FileNotFoundError: [Errno 2] No such file or directory: 'text8'
  </code></pre>
  
  <p>How do I rectify this ?
  Thanks in advance for your help.</p>