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To remove the range limitation, add a getrandbits() method.)r r' � bit_length�_warn) r. ra r9 �maxsize�type�Method� BuiltinMethodr r' �k�r�rem�limitr0 r0 r1 rX � s" $ zRandom._randbelowc C sB y | j t | � � } Wn t k r9 t d � � Yn X| | S)Nz$Cannot choose from an empty sequence)rX rB rQ � IndexError)r. �seq�ir0 r0 r1 r s z Random.choicec C s� | d k rk | j } x� t t d t | � � � D]3 } | | d � } | | | | | | <| | <q1 Wn` t } xW t t d t | � � � D]: } | | � | d � } | | | | | | <| | <q� Wd S)Nr5 )rX �reversed�rangerB r9 )r. r/ r � randbelowro �jr\ r0 r0 r1 r s "$"zRandom.shufflec C s� t | t � r t | � } t | t � s6 t d � � | j } t | � } d | k ob | k n ss t d � � d g | } d } | d k r� | d t t | d d � � 7} | | k rt | � } x� t | � D]: } | | | � } | | | | <| | | d | | <q� Wnl t � } | j } xW t | � D]I } | | � } x | | k rh| | � } qMW| | � | | | | <q8W| S) Nz>Population must be a sequence or set. 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