wikitextparser/_wikitext.py
def _check_index(self, key: Union[slice, int]) -> (int, int):
        """Return adjusted start and stop index as tuple.

        Used in  __setitem__ and __delitem__.
        """
        ss, se = self._span
        if isinstance(key, int):
            if key < 0:
                key += se - ss
                if key < 0:
                    raise IndexError('index out of range')
            elif key >= se - ss:
                raise IndexError('index out of range')
            start = ss + key
            return start, start + 1
        # isinstance(key, slice)
        if key.step is not None:
            raise NotImplementedError(
                'step is not implemented for string setter.')
        start, stop = key.start or 0, key.stop
        if start < 0:
            start += se - ss
            if start < 0:
                raise IndexError('start index out of range')
        if stop is None:
            stop = se - ss
        elif stop < 0:
            stop += se - ss
        if start > stop:
            raise IndexError(
                'stop index out of range or start is after the stop')
        return start + ss, stop + ss
def _check_index(self, key: Union[slice, int]) -> (int, int):
        ss, se = self._span
        if isinstance(key, int):
            if key < 0:
                key += se - ss
                if key < 0:
                    raise IndexError('index out of range')
            elif key >= se - ss:
                raise IndexError('index out of range')
            start = ss + key
            return start, start + 1
        # isinstance(key, slice)
        if key.step is not None:
            raise NotImplementedError(
                'step is not implemented for string setter.')
        start, stop = key.start or 0, key.stop
        if start < 0:
            start += se - ss
            if start < 0:
                raise IndexError('start index out of range')
        if stop is None:
            stop = se - ss
        elif stop < 0:
            stop += se - ss
        if start > stop:
            raise IndexError(
                'stop index out of range or start is after the stop')
        return start + ss, stop + ss
def _check_index ( self , key : Union [ slice , int ] ) -> ( int , int ) : ss , se = self . _span if isinstance ( key , int ) : if key < 0 : key += se - ss if key < 0 : raise IndexError ( 'index out of range' ) elif key >= se - ss : raise IndexError ( 'index out of range' ) start = ss + key return start , start + 1 # isinstance(key, slice) if key . step is not None : raise NotImplementedError ( 'step is not implemented for string setter.' ) start , stop = key . start or 0 , key . stop if start < 0 : start += se - ss if start < 0 : raise IndexError ( 'start index out of range' ) if stop is None : stop = se - ss elif stop < 0 : stop += se - ss if start > stop : raise IndexError ( 'stop index out of range or start is after the stop' ) return start + ss , stop + ss
Return adjusted start and stop index as tuple.

        Used in  __setitem__ and __delitem__.
Return adjusted start and stop index as tuple .