code: def test_line_secondary():
      """Test line with a secondary serie"""
      line = Line()
      rng = [8, 12, 23, 73, 39, 57]
      line.add("First serie", rng)
      line.add(
          "Secondary serie", map(lambda x: x * 2, rng), secondary=True
      )
      line.title = "One serie"
      q = line.render_pyquery()
      assert len(q(".axis.x")) == 0
      assert len(q(".axis.y")) == 1
      assert len(q(".plot .series path")) == 2
      assert len(q(".x.axis .guides")) == 0
      assert len(q(".y.axis .guides")) == 7
  
file_path: pygal/pygal/test/test_line.py
imports: from __future__ import division
  from math import cos, sin
  from pygal import Line
  from pygal.test.utils import texts
label_desc: Use image node_id 12 for calling a global function with example usage: test_line_secondary() without return types