code: def reinit_file(self):
      with open(self.filename, "w") as f:
          f.write(self.file_content)
      return self.filename
  
imports: from tempfile import mkstemp
  from pythran.tests import TestEnv
  import unittest
  from pythran.typing import List
label_desc: Use image node_id 3 for calling the TestFile obj's underlying member method code with example usage: obj.reinit_file() and returns: self