code: def tempfile(self):
      filename = mkstemp()[1]
      with open(filename, "w") as f:
          f.write(self.file_content)
      self.filename = filename
      return filename
  
imports: from tempfile import mkstemp
  from pythran.tests import TestEnv
  import unittest
  from pythran.typing import List
label_desc: Use image node_id 2 for calling the TestFile obj's underlying member method code with example usage: obj.tempfile() and returns: filename