def stem(self, word):
        """Return Snowball Danish stem.

        Parameters
        ----------
        word : str
            The word to stem

        Returns
        -------
        str
            Word stem

        Examples
        --------
        >>> stmr = SnowballDanish()
        >>> stmr.stem('underviser')
        'undervis'
        >>> stmr.stem('suspension')
        'suspension'
        >>> stmr.stem('sikkerhed')
        'sikker'

        """
        # lowercase, normalize, and compose
        word = normalize('NFC', text_type(word.lower()))

        r1_start = min(max(3, self._sb_r1(word)), len(word))

        # Step 1
        _r1 = word[r1_start:]
        if _r1[-7:] == 'erendes':
            word = word[:-7]
        elif _r1[-6:] in {'erende', 'hedens'}:
            word = word[:-6]
        elif _r1[-5:] in {
            'ethed',
            'erede',
            'heden',
            'heder',
            'endes',
            'ernes',
            'erens',
            'erets',
        }:
            word = word[:-5]
        elif _r1[-4:] in {
            'ered',
            'ende',
            'erne',
            'eren',
            'erer',
            'heds',
            'enes',
            'eres',
            'eret',
        }:
            word = word[:-4]
        elif _r1[-3:] in {'hed', 'ene', 'ere', 'ens', 'ers', 'ets'}:
            word = word[:-3]
        elif _r1[-2:] in {'en', 'er', 'es', 'et'}:
            word = word[:-2]
        elif _r1[-1:] == 'e':
            word = word[:-1]
        elif _r1[-1:] == 's':
            if len(word) > 1 and word[-2] in self._s_endings:
                word = word[:-1]

        # Step 2
        if word[r1_start:][-2:] in {'gd', 'dt', 'gt', 'kt'}:
            word = word[:-1]

        # Step 3
        if word[-4:] == 'igst':
            word = word[:-2]

        _r1 = word[r1_start:]
        repeat_step2 = False
        if _r1[-4:] == 'elig':
            word = word[:-4]
            repeat_step2 = True
        elif _r1[-4:] == 'løst':
            word = word[:-1]
        elif _r1[-3:] in {'lig', 'els'}:
            word = word[:-3]
            repeat_step2 = True
        elif _r1[-2:] == 'ig':
            word = word[:-2]
            repeat_step2 = True

        if repeat_step2:
            if word[r1_start:][-2:] in {'gd', 'dt', 'gt', 'kt'}:
                word = word[:-1]

        # Step 4
        if (
            len(word[r1_start:]) >= 1
            and len(word) >= 2
            and word[-1] == word[-2]
            and word[-1] not in self._vowels
        ):
            word = word[:-1]

        return word
def stem(self, word):
        """Return Snowball Danish stem.

        Parameters
        ----------
        word : str
            The word to stem

        Returns
        -------
        str
            Word stem

        Examples
        --------
        >>> stmr = SnowballDanish()
        >>> stmr.stem('underviser')
        'undervis'
        >>> stmr.stem('suspension')
        'suspension'
        >>> stmr.stem('sikkerhed')
        'sikker'

        """
        # lowercase, normalize, and compose
        word = normalize('NFC', text_type(word.lower()))

        r1_start = min(max(3, self._sb_r1(word)), len(word))

        # Step 1
        _r1 = word[r1_start:]
        if _r1[-7:] == 'erendes':
            word = word[:-7]
        elif _r1[-6:] in {'erende', 'hedens'}:
            word = word[:-6]
        elif _r1[-5:] in {
            'ethed',
            'erede',
            'heden',
            'heder',
            'endes',
            'ernes',
            'erens',
            'erets',
        }:
            word = word[:-5]
        elif _r1[-4:] in {
            'ered',
            'ende',
            'erne',
            'eren',
            'erer',
            'heds',
            'enes',
            'eres',
            'eret',
        }:
            word = word[:-4]
        elif _r1[-3:] in {'hed', 'ene', 'ere', 'ens', 'ers', 'ets'}:
            word = word[:-3]
        elif _r1[-2:] in {'en', 'er', 'es', 'et'}:
            word = word[:-2]
        elif _r1[-1:] == 'e':
            word = word[:-1]
        elif _r1[-1:] == 's':
            if len(word) > 1 and word[-2] in self._s_endings:
                word = word[:-1]

        # Step 2
        if word[r1_start:][-2:] in {'gd', 'dt', 'gt', 'kt'}:
            word = word[:-1]

        # Step 3
        if word[-4:] == 'igst':
            word = word[:-2]

        _r1 = word[r1_start:]
        repeat_step2 = False
        if _r1[-4:] == 'elig':
            word = word[:-4]
            repeat_step2 = True
        elif _r1[-4:] == 'løst':
            word = word[:-1]
        elif _r1[-3:] in {'lig', 'els'}:
            word = word[:-3]
            repeat_step2 = True
        elif _r1[-2:] == 'ig':
            word = word[:-2]
            repeat_step2 = True

        if repeat_step2:
            if word[r1_start:][-2:] in {'gd', 'dt', 'gt', 'kt'}:
                word = word[:-1]

        # Step 4
        if (
            len(word[r1_start:]) >= 1
            and len(word) >= 2
            and word[-1] == word[-2]
            and word[-1] not in self._vowels
        ):
            word = word[:-1]

        return word
def stem ( self , word ) : # lowercase, normalize, and compose word = normalize ( 'NFC' , text_type ( word . lower ( ) ) ) r1_start = min ( max ( 3 , self . _sb_r1 ( word ) ) , len ( word ) ) # Step 1 _r1 = word [ r1_start : ] if _r1 [ - 7 : ] == 'erendes' : word = word [ : - 7 ] elif _r1 [ - 6 : ] in { 'erende' , 'hedens' } : word = word [ : - 6 ] elif _r1 [ - 5 : ] in { 'ethed' , 'erede' , 'heden' , 'heder' , 'endes' , 'ernes' , 'erens' , 'erets' , } : word = word [ : - 5 ] elif _r1 [ - 4 : ] in { 'ered' , 'ende' , 'erne' , 'eren' , 'erer' , 'heds' , 'enes' , 'eres' , 'eret' , } : word = word [ : - 4 ] elif _r1 [ - 3 : ] in { 'hed' , 'ene' , 'ere' , 'ens' , 'ers' , 'ets' } : word = word [ : - 3 ] elif _r1 [ - 2 : ] in { 'en' , 'er' , 'es' , 'et' } : word = word [ : - 2 ] elif _r1 [ - 1 : ] == 'e' : word = word [ : - 1 ] elif _r1 [ - 1 : ] == 's' : if len ( word ) > 1 and word [ - 2 ] in self . _s_endings : word = word [ : - 1 ] # Step 2 if word [ r1_start : ] [ - 2 : ] in { 'gd' , 'dt' , 'gt' , 'kt' } : word = word [ : - 1 ] # Step 3 if word [ - 4 : ] == 'igst' : word = word [ : - 2 ] _r1 = word [ r1_start : ] repeat_step2 = False if _r1 [ - 4 : ] == 'elig' : word = word [ : - 4 ] repeat_step2 = True elif _r1 [ - 4 : ] == 'løst': word = word [ : - 1 ] elif _r1 [ - 3 : ] in { 'lig' , 'els' } : word = word [ : - 3 ] repeat_step2 = True elif _r1 [ - 2 : ] == 'ig' : word = word [ : - 2 ] repeat_step2 = True if repeat_step2 : if word [ r1_start : ] [ - 2 : ] in { 'gd' , 'dt' , 'gt' , 'kt' } : word = word [ : - 1 ] # Step 4 if ( len ( word [ r1_start : ] ) >= 1 and len ( word ) >= 2 and word [ - 1 ] == word [ - 2 ] and word [ - 1 ] not in self . _vowels ) : word = word [ : - 1 ] return word
Return Snowball Danish stem.

        Parameters
        ----------
        word : str
            The word to stem

        Returns
        -------
        str
            Word stem

        Examples
        --------
        >>> stmr = SnowballDanish()
        >>> stmr.stem('underviser')
        'undervis'
        >>> stmr.stem('suspension')
        'suspension'
        >>> stmr.stem('sikkerhed')
        'sikker'
Return Snowball Danish stem .