62     def __init__(self, args=None, returncode=None, stdout=None, stderr=None):  argument
66             self.stderr = stderr
70                 args=args, returncode=returncode, stdout=stdout, stderr=stderr)
96     def __init__(self, returncode, cmd, stdout=None, stderr=None, msg=None,  argument
109         self.stderr = stderr
118     def stringify(self, stdout=True, stderr=True):  argument
131         if stderr and self.stderr:
132             items.append(self.stderr)
184                   file=sys.stderr)
349         sys.stderr.flush()
378                       stderr=popen_stderr, shell=False, env=env,
392             (result.stdout, result.stderr) = proc.communicate(input)
408                 result.stderr = popen_stderr.read()
419                 stderr=result.stderr, msg=msg)
426                 args=cmd, stderr=estr.encode('utf-8'), returncode=255)
430                 stderr=result.stderr, msg=estr, exception=e)
442     if result.stderr is not None:
443         result.stderr = result.stderr.decode('utf-8', 'replace')