Chapter 7: Fix typo in voice-assistant.mdx

[rodrigobdz]

There was an issue with the indentation and item["text"] was not defined outside of the for loop using the wrong indentation.

Reproduction steps

Source: Creating a voice assistant

from transformers import pipeline

import torch

device = torch.device("cuda" if torch.cuda.is_available() else "cpu")

transcriber = pipeline(
    "automatic-speech-recognition", model="openai/whisper-base.en", device=device
)

import sys

from transformers.pipelines.audio_utils import ffmpeg_microphone_live


def transcribe(chunk_length_s=5.0, stream_chunk_s=1.0):
    sampling_rate = transcriber.feature_extractor.sampling_rate

    mic = ffmpeg_microphone_live(
        sampling_rate=sampling_rate,
        chunk_length_s=chunk_length_s,
        stream_chunk_s=stream_chunk_s,
    )

    print("Start speaking...")
    for item in transcriber(mic, generate_kwargs={"max_new_tokens": 128}):
        sys.stdout.write("\033[K")
        print(item["text"], end="\r")
        if not item["partial"][0]:
            break

    return item["text"]

transcribe()

Error logs

ALSA lib confmisc.c:855:(parse_card) cannot find card '0'
ALSA lib conf.c:5178:(_snd_config_evaluate) function snd_func_card_inum returned error: No such file or directory
ALSA lib confmisc.c:422:(snd_func_concat) error evaluating strings
ALSA lib conf.c:5178:(_snd_config_evaluate) function snd_func_concat returned error: No such file or directory
ALSA lib confmisc.c:1334:(snd_func_refer) error evaluating name
ALSA lib conf.c:5178:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:5701:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2664:(snd_pcm_open_noupdate) Unknown PCM default
---------------------------------------------------------------------------
UnboundLocalError                         Traceback (most recent call last)
Cell In[8], line 1
----> 1 transcribe()

Cell In[7], line 22, in transcribe(chunk_length_s, stream_chunk_s)
     19     if not item["partial"][0]:
     20         break
---> 22 return item["text"]

UnboundLocalError: cannot access local variable 'item' where it is not associated with a value