B >?[@sbddlmZddlZddlZddlmZddddddd d d d d ddddddZGdddeZdS))print_functionN)inputzyou arezyou wereyouz you wouldzyou havezyou willyourzI amzI waszI havezI willmyZmineme)zi amzi wasizi'mzi'dzi'vezi'llrzyou arezyou werezyou'vezyou'llrZyoursrrc@sBeZdZifddZddZddZddZd d Zdd d ZdS)ChatcCs$dd|D|_||_||_dS)a Initialize the chatbot. Pairs is a list of patterns and responses. Each pattern is a regular expression matching the user's statement or question, e.g. r'I like (.*)'. For each such pattern a list of possible responses is given, e.g. ['Why do you like %1', 'Did you ever dislike %1']. Material which is matched by parenthesized sections of the patterns (e.g. .*) is mapped to the numbered positions in the responses, e.g. %1. :type pairs: list of tuple :param pairs: The patterns and responses :type reflections: dict :param reflections: A mapping between first and second person expressions :rtype: None cSs"g|]\}}t|tj|fqS)recompile IGNORECASE).0xyr r -lib/python3.7/site-packages/nltk/chat/util.py 7sz!Chat.__init__..N)_pairs _reflections_compile_reflections_regex)selfZpairs reflectionsr r r__init__'sz Chat.__init__c Cs6t|jtdd}tddttj |tj S)NT)keyreversez \b({0})\b|) sortedrkeyslenr r formatjoinmapescaper )rZ sorted_reflr r rr;szChat._compile_reflectionscsjfdd|S)z Substitute words in the string, according to the specified reflections, e.g. "I'm" -> "you are" :type str: str :param str: The string to be mapped :rtype: str csj|j||S)N)rstringstartend)Zmo)rr rLsz"Chat._substitute..)rsublower)rstrr )rr _substituteAs zChat._substitutecCsj|d}xZ|dkrdt||d|d}|d||||||dd}|d}q W|S)N%r)findintr+group)rresponsematchposZnumr r r _wildcardsOs   ,zChat._wildcardscCsxz|jD]p\}}||}|rt|}|||}|dddkrT|ddd}|dddkrt|ddd}|SqWdS)z Generate a response to the user input. :type str: str :param str: The string to be mapped :rtype: str Nz?..z???)rr3randomZchoicer5)rr*patternr2r3Zrespr r rrespond[s    z Chat.respondquitcCstd}xj||krn|}y td}Wntk r:t|YnX|rx|ddkr\|dd}qBWt||qWdS)N>z!.)rEOFErrorprintr;)rr<Z user_inputr r rconverseus  z Chat.converseN)r<) __name__ __module__ __qualname__rrr+r5r;rBr r r rr &s   r ) Z __future__rr r9Z six.movesrrobjectr r r r r s(