Function _load_testfile

Lib/doctest.py:245–261

(filename, package, module_relative, encoding)

    return IncrementalNewlineDecoder(None, True).decode(data, True)

def _load_testfile(filename, package, module_relative, encoding):
    if module_relative:
        package = _normalize_module(package, 3)
        filename = _module_relative_path(package, filename)
        if (loader := getattr(package, '__loader__', None)) is None:
            try:
                loader = package.__spec__.loader
            except AttributeError:
                pass
        if hasattr(loader, 'get_data'):
            file_contents = loader.get_data(filename)
            file_contents = file_contents.decode(encoding)
            # get_data() opens files as 'rb', so one must do the equivalent
            # conversion as universal newlines would do.
            return _newline_convert(file_contents), filename
    with open(filename, encoding=encoding) as f:
        return f.read(), filename

def _indent(s, indent=4):
    """