title: python reportlab: how can I custom table inner line?
body: <p>Curren table looks like:</p>
  <p><a href="https://i.stack.imgur.com/NZHPs.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/NZHPs.png" alt="enter image description here" /></a></p>
  <p>And table code is:</p>
  <pre><code>[('ALIGN', (0, 0), (-1, -1), 'CENTER'),
  ('ALIGN', (1, 1), (-1, -1), 'LEFT'),
  ('INNERGRID', (0, 0), (-1, -1), 0.25, colors.lightgrey),
  # ('INNERGRID', (?, ?), (-1, -1), 0.25, colors.black), # I think maybe should modify this line
  ('LINEBELOW', (0, 0), (-1, 0), 1, colors.black),
  ('OUTLINE', (0, 0), (-1, -1), 1, colors.lightgrey),
  ('LEFTPADDING', (0, 0), (-1, -1), 1),
  ('RIGHTPADDING', (0, 0), (-1, -1), 1),
  ('TOPPADDING', (0, 0), (-1, -1), 1),
  ('BOTTOMPADDING', (0, 0), (-1, -1), 1),
  ]
  </code></pre>
  <p>But I want modify this code to make my table like:</p>
  <p><a href="https://i.stack.imgur.com/yWwvb.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/yWwvb.png" alt="enter image description here" /></a></p>
  <p>If the variable 'lineBold' value is 2, a bold line is displayed every two lines in the table. Variable values can change.</p>
  <p>Can I ask for advice to solve my problem?</p>