Change speechContext to speechContexts.

[p-siegel]

Append 's' to speechContext in order to work with the API. Stracktrace without:
File "/usr/local/lib/python2.7/dist-packages/google/cloud/speech/sample.py", line 300, in recognize
profanity_filter, speech_contexts)
File "/usr/local/lib/python2.7/dist-packages/google/cloud/speech/_http.py", line 165, in recognize
method='POST', path='speech:recognize', data=data)
File "/usr/local/lib/python2.7/dist-packages/google/cloud/_http.py", line 303, in api_request
error_info=method + ' ' + url)
google.cloud.exceptions.BadRequest: 400 Invalid JSON payload received. Unknown name "speech_context" at 'config': Cannot find field. (POST https://speech.googleapis.com/v1/speech:recognize)
Aborted (core dumped)

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[p-siegel]

I signed it!

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CLAs look good, thanks!

[tseaver]

@p-siegel Thanks for the patch! We also need to adjust the tests to match (i.e., in tests/unit/test_client.py).

[tseaver]

It would be best if we could add / modify a system test which exercises the failing case, too.

[dhermes]

@tseaver We could just send commits to this PR to help it along?

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[tseaver]

The speech system tests are failing on master for me at the moment (#3392) so I'm not going to hold this PR up for them (and there are tests which set speech_contexts, anyway).

[dhermes]

SGTM @tseaver

[zoell]

Hello,

I just tried these examples over the weekend here but it seems it works only when I specified one word:
https://cloud.google.com/speech/docs/basics#phrase-hints

So if I add "shwazil" to speech_contexts, that works, but if I add ["shwazil", "hoful"], it just recognizes shwazil but leaves the hoful word untouched and it is not recognized properly.

Is this example working for you?

Thanks,
zoell

[p-siegel]

Hi,
I just tried the example. The same is happening to me. When I only provide a single word, that word is recognized. But when I specify both words, only "shwazil" is recognized.

[tseaver]

@zoell, are you running from a Git clone, or from the released version on PyPI. If the latter, this PRs changes have not yet been released.

[tseaver]

@p-siegel Can you provide a Python sample of how you pass in the multiple words? I'm assuming something like:

sample = client.sample(
            encoding=speech.Encoding.FLAC,
            sample_rate_hertz=16000,
            source_uri='gs://speech-demo/shwazil_hoful.flac',
        )
results = sample.recognize(
    language_code='en-US',
    speech_contexts=['hoful', 'shwazil'],
)

or else maybe:

sample = client.sample(
            encoding=speech.Encoding.FLAC,
            sample_rate_hertz=16000,
            source_uri='gs://speech-demo/shwazil_hoful.flac',
        )
results = sample.recognize(
    language_code='en-US',
    speech_contexts=['shwazil hoful'],
)

[tseaver]

Here is what I get:

>>> r1 = sample.recognize(
...     language_code='en-US',
...     speech_contexts=['hoful', 'shwazil'],
... )
>>> r1[0].alternatives[0].__dict__
{'_confidence': 0.7818678021430969, '_transcript': u"it's a shwazil huffel day"}
>>> r2 = sample.recognize(
...     language_code='en-US',
...     speech_contexts=['shwazil hoful'],
... )
>>> r2[0].alternatives[0].__dict__
{'_confidence': 0.7818678021430969, '_transcript': u"it's a shwazil huffel day"}

[p-siegel]

@tseaver Here is what I used: Looks pretty much the same.

with open('./shwazil_hoful.flac', 'rb') as speech:
    speech_content = speech.read()

sample = client.sample(
    speech_content,
    source_uri=None,
    encoding='FLAC', 
    sample_rate_hertz=16000
)
	
response = sample.recognize(
    language_code='en-US',
    speech_contexts=['shwazil', 'hoful']
) 

The response is exactly the same as yours.

[zoell]

I installed the PyPI version but changed _http.py to this one.
Same is for me as yours.

[tseaver]

This is an issue with the back-end API sample doc. I just tried the same request in the "Try It!" form for the recognize API docs:

{
  "config": {
    "encoding": "FLAC",
    "sampleRateHertz": 16000,
    "languageCode": "en-US",
    "speechContexts": [
      {
        "phrases": [
          "hoful",
          "shwazil"
        ]
      }
    ]
  },
  "audio": {
    "uri": "gs://speech-demo/shwazil_hoful.flac"
  }
}

with the same result:

{
  "results": [
    {
      "alternatives": [
        {
          "transcript": "it's a shwazil huffel day",
          "confidence": 0.7818678
        }
      ]
    }
  ]
}