class_docstr: test Graphers from analyzers
class_docstr_tok: ["test","Graphers","from","analyzers"]
code: def tearDown(self):
      # Clean-up : delete temp file
      if not PLOT:
          os.unlink(self.temp_file.name)
  
file_path: TimeSide/tests/test_graphers_render_analyzers.py
imports: from __future__ import division
  import unittest
  from unit_timeside import TestRunner
  import timeside
  from timeside.core.tools.test_samples import samples
  from tempfile import NamedTemporaryFile
  import os
  from timeside.core.grapher import DisplayAnalyzer
label_desc: Use image node_id 3 for calling the Test_graphers_analyzers obj's underlying member method code with example usage: obj.tearDown() without return types