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Implement get_refs function for DrtLambdaExpression #2847

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merged 2 commits into from Oct 9, 2021
Merged

Implement get_refs function for DrtLambdaExpression #2847

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Implement get_refs function for DrtLambdaExpression
Oct 7, 2021
583c020
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Oct 7, 2021
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6 changes: 6 additions & 0 deletions nltk/sem/drt.py
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Expand Up @@ -717,6 +717,12 @@ def _pretty(self):
+ [" " + blank + line for line in term_lines[3:]]
)

def get_refs(self, recursive=False):
""":see: AbstractExpression.get_refs()"""
return (
[self.variable] + self.term.get_refs(True) if recursive else [self.variable]
)


class DrtBinaryExpression(DrtExpression, BinaryExpression):
def get_refs(self, recursive=False):
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