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Add check to fix bug caused by short token lists in word augmenter #314

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Add check to fix bug caused by short token lists in word augmenter #314

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4 changes: 2 additions & 2 deletions nlpaug/augmenter/word/word_augmenter.py
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Original file line number Diff line number Diff line change
Expand Up @@ -98,13 +98,13 @@ def _get_random_aug_idxes(self, tokens):

def _get_aug_range_idxes(self, tokens):
aug_cnt = self.generate_aug_cnt(len(tokens))
if aug_cnt == 0 or len(tokens) == 0:
if (aug_cnt == 0) or (aug_cnt >= len(tokens)):
return []
direction = self.sample([-1, 1], 1)[0]

if direction > 0:
# right
word_idxes = [i for i, _ in enumerate(tokens[:-aug_cnt+1])]
word_idxes = [i for i, _ in enumerate(tokens[:-aug_cnt])]
else:
# left
word_idxes = [i for i, _ in enumerate(tokens[aug_cnt-1:])]
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