title: How to make page range in tabula-py?
body: <p>In Python 3, I have a PDF file "Ativos_Fevereiro_2018_servidores.pdf" with 6,041 pages. I'm on a machine with Ubuntu. The file is here: <a href="https://drive.google.com/file/d/1P8kF0gUOVls6sOGed4R0C2PlVF5RFtU6/view?usp=sharing" rel="nofollow noreferrer">https://drive.google.com/file/d/1P8kF0gUOVls6sOGed4R0C2PlVF5RFtU6/view?usp=sharing</a></p>
  
  <p>On each page there is text at the top of the page, two lines. And below a table, with header and two columns. Each table in 36 rows, less on the last page</p>
  
  <p>At the end of each page, after the tables, there is also a line of text</p>
  
  <p>I want to create a CSV from this PDF, considering only the tables in the pages. And ignoring the texts before and after the tables</p>
  
  <p>To avoid java-memory errors I thought I'd split the file into groups of 300 pages. I did so in tabula-py:</p>
  
  <pre><code>import tabula
  import pandas as pd
  
  
  dfs = []
  
  for i in range(1,6041, 300):
      if i != 1:
          i = i + 1
  
      i2 = i + 300
  
      if i2 &gt; 6041:
          i2 = 6041
  
      print(i)
      print(i2)
  
      try:
          df = tabula.read_pdf("Ativos_Fevereiro_2018.pdf", encoding='latin-1', spreadsheet=True, pages='i-i2', header=0)
          dfs.append(df)
          print('Page ', len(df), ' parsed.')
      except:
          print('Error on page: ', i)
  
  output = pd.concat(dfs)
  output.to_csv('servidores_rj_ativos_fev_18.csv', encoding='utf-8', index=False)
  </code></pre>
  
  <p>But the range I made is wrong:</p>
  
  <pre><code>1
  301
  Error: Syntax error in page range specification
  Error on page:  1
  302
  602
  ...
  Error: Syntax error in page range specification
  Error on page:  5702
  6002
  6041
  Error: Syntax error in page range specification
  Error on page:  6002
  Traceback (most recent call last):
    File "roboseguranca_pdftocsv.py", line 26, in &lt;module&gt;
      output = pd.concat(dfs)
    File "/home/reinaldo/Documentos/Code/intercept/seguranca/lib/python3.6/site-packages/pandas/core/reshape/concat.py", line 212, in concat
      copy=copy)
    File "/home/reinaldo/Documentos/Code/intercept/seguranca/lib/python3.6/site-packages/pandas/core/reshape/concat.py", line 245, in __init__
      raise ValueError('No objects to concatenate')
  ValueError: No objects to concatenate
  </code></pre>
  
  <p>Please, how can I correct the range error?</p>