nltk.CFG.is_leftcorner¶

CFG.is_leftcorner(cat, left)[source]¶

True if left is a leftcorner of cat, where left can be a terminal or a nonterminal.

Parameters:	cat (Nonterminal) – the parent of the leftcorner left (Terminal or Nonterminal) – the suggested leftcorner
Return type:	bool