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Added handling for length <2 of suppress_tokens for whisper #36336

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Added handling for length <2 of suppress_tokens for whisper #36336

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1cc2320
Update generation_whisper.py
andreystarenky Feb 21, 2025
b8bccdd
Updated None check for suppress_tokens to avoid ambiguity
andreystarenky Feb 21, 2025
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5 changes: 4 additions & 1 deletion src/transformers/models/whisper/generation_whisper.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1779,7 +1779,10 @@ def _prepare_decoder_input_ids(

prev_start_of_text = getattr(generation_config, "prev_sot_token_id", None)
if prev_start_of_text is None:
prev_start_of_text = suppress_tokens[-2] if suppress_tokens is not None else None
if suppress_tokens is not None and len(suppress_tokens) >= 2:
prev_start_of_text = suppress_tokens[-2]
else:
prev_start_of_text = None

if any(do_condition_on_prev_tokens) and len(current_segments[0]) > 0:
# according to https://github.com/openai/whisper/blob/e58f28804528831904c3b6f2c0e473f346223433/whisper/decoding.py#L609
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