title: Python enumerate() tqdm progress-bar when reading a file?
body: <p>I can't see the tqdm progress bar when I use this code to iterate my opened file:</p>
  
  <pre><code>        with open(file_path, 'r') as f:
          for i, line in enumerate(tqdm(f)):
              if i &gt;= start and i &lt;= end:
                  print("line #: %s" % i)
                  for i in tqdm(range(0, line_size, batch_size)):
                      # pause if find a file naed pause at the currend dir
                      re_batch = {}
                      for j in range(batch_size):
                          re_batch[j] = re.search(line, last_span)
  </code></pre>
  
  <p>what's the right way to use tqdm here?</p>