code: def test_double_coding_same_line(self):
      src = (
          b"#coding:iso8859-15 coding:latin1\n"
          b'print(ascii("\xc3\xa4"))\n'
      )
      self.check_script_output(src, rb"'\xc3\u20ac'")
  
imports: import unittest
  from test.support import script_helper, captured_stdout, requires_subprocess, requires_resource
  from test.support.os_helper import TESTFN, unlink, rmtree
  from test.support.import_helper import unload
  import importlib
  import os
  import sys
  import subprocess
  import tempfile
label_desc: Use image node_id 6 for calling the AbstractSourceEncodingTest obj's underlying member method code with example usage: obj.test_double_coding_same_line() without return types