def __init__(
        self,
        file_or_files: Union[None, PathLike, "BytesIO", Sequence[Union[PathLike, "BytesIO"]]] = None,
        read_only: bool = True,
        merge_includes: bool = True,
        config_level: Union[Lit_config_levels, None] = None,
        repo: Union["Repo", None] = None,
    ) -> None:
        """Initialize a configuration reader to read the given `file_or_files` and to
        possibly allow changes to it by setting `read_only` False.

        :param file_or_files:
            A file path or file object, or a sequence of possibly more than one of them.

        :param read_only:
            If ``True``, the ConfigParser may only read the data, but not change it.
            If ``False``, only a single file path or file object may be given. We will
            write back the changes when they happen, or when the ConfigParser is
            released. This will not happen if other configuration files have been
            included.

        :param merge_includes:
            If ``True``, we will read files mentioned in ``[include]`` sections and
            merge their contents into ours. This makes it impossible to write back an
            individual configuration file. Thus, if you want to modify a single
            configuration file, turn this off to leave the original dataset unaltered
            when reading it.

        :param repo:
            Reference to repository to use if ``[includeIf]`` sections are found in
            configuration files.
        """
        cp.RawConfigParser.__init__(self, dict_type=_OMD)
        self._dict: Callable[..., _OMD]
        self._defaults: _OMD
        self._sections: _OMD

        # Used in Python 3. Needs to stay in sync with sections for underlying
        # implementation to work.
        if not hasattr(self, "_proxies"):
            self._proxies = self._dict()

        if file_or_files is not None:
            self._file_or_files: Union[PathLike, "BytesIO", Sequence[Union[PathLike, "BytesIO"]]] = file_or_files
        else:
            if config_level is None:
                if read_only:
                    self._file_or_files = [
                        get_config_path(cast(Lit_config_levels, f)) for f in CONFIG_LEVELS if f != "repository"
                    ]
                else:
                    raise ValueError("No configuration level or configuration files specified")
            else:
                self._file_or_files = [get_config_path(config_level)]

        self._read_only = read_only
        self._dirty = False
        self._is_initialized = False
        self._merge_includes = merge_includes
        self._repo = repo
        self._lock: Union["LockFile", None] = None
        self._acquire_lock()
Initialize a configuration reader to read the given `file_or_files` and to
        possibly allow changes to it by setting `read_only` False.

        :param file_or_files:
            A file path or file object, or a sequence of possibly more than one of them.

        :param read_only:
            If ``True``, the ConfigParser may only read the data, but not change it.
            If ``False``, only a single file path or file object may be given. We will
            write back the changes when they happen, or when the ConfigParser is
            released. This will not happen if other configuration files have been
            included.

        :param merge_includes:
            If ``True``, we will read files mentioned in ``[include]`` sections and
            merge their contents into ours. This makes it impossible to write back an
            individual configuration file. Thus, if you want to modify a single
            configuration file, turn this off to leave the original dataset unaltered
            when reading it.

        :param repo:
            Reference to repository to use if ``[includeIf]`` sections are found in
            configuration files.
        
git/config.py