Of `SSKrSSKrSSKJr S SjrSrSrSrS Sjr\ S:Xa\"5 gg) N) NonterminalcU(dUR5nUc[R"5S-S- n[X/U5nU(a[R "XC5nU$)aQ Generates an iterator of all sentences from a CFG. :param grammar: The Grammar used to generate sentences. :param start: The Nonterminal from which to start generate sentences. :param depth: The maximal depth of the generated tree. :param n: The maximum number of sentences to return. :return: An iterator of lists of terminal tokens. )startsysgetrecursionlimit _generate_all itertoolsislice)grammarrdepthniters 5/usr/lib/python3/dist-packages/nltk/parse/generate.pygeneratersU   }&&(A-2 '5 1D( Kc## U(a4[XSU5Hn[XSSU5H nX4-v M M! g/v g![an[S5UeSnAff=f7f)Nrz}The grammar has rule(s) that yield infinite recursion! Eventually use a lower 'depth', or a higher 'sys.setrecursionlimit()'.) _generate_oner RecursionError RuntimeError)r itemsr frag1frag2errors rr r )ss  &wa%@*7!"IuEE-'FA H  s'A!2AA! A AAA!c## US:aW[U[5(a<URUS9H(n[XR 5US- 5ShvN M* gU/v ggN7f)Nr)lhsr) isinstancer productionsr rhs)r itemr prods rrr9s_ qy dK ( (+++5(((*eaiHHH6&L IsAA#A!A#z S -> NP VP NP -> Det N PP -> P NP VP -> 'slept' | 'saw' NP | 'walked' PP Det -> 'the' | 'a' N -> 'man' | 'park' | 'dog' P -> 'in' | 'with' cSSKJn [SU4-5 [[5 UR [5n[ [ X S9S5H$up4[SUSRU54-5 M& g)Nr)CFGz3Generating the first %d sentences for demo grammar:)rrz%3d. %s ) nltk.grammarr$print demo_grammar fromstring enumeraterjoin)Nr$r rsents rdemor.Ms]  ?1$ FG ,nn\*GXg3Q7 i1chhtn--.8r__main__)NNN)) r rr&rrr rr(r.__name__rrr3s? $0   / zFr