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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _mkstemp_inner(dir, pre, suf, flags):
 """Code common to mkstemp, TemporaryFile, and NamedTemporaryFile."""


    names = _get_candidate_names()

    for seq in range(TMP_MAX):
        name = next(names)
        file = _os.path.join(dir, pre + name + suf)
        try:
            fd = _os.open(file, flags, 0o600)
            return (fd, _os.path.abspath(file))
        except FileExistsError:
            continue    # try again
        except PermissionError:
            # This exception is thrown when a directory with the chosen name
            # already exists on windows.
            if _os.name == 'nt':
                continue
            else:
                raise

    raise FileExistsError(_errno.EEXIST,
                          "No usable temporary file name found")