title: Google Vision API text detection Python example uses project: "google.com:cloudsdktool" and not my own project
body: <p>I am working on the python example for Cloud Vision API from <a href="https://github.com/GoogleCloudPlatform/cloud-vision/tree/master/python/text" rel="nofollow">github repo</a>.</p>
  
  <p>I have already setup the project and activated the service account with its key. I have also called the <code>gcloud auth</code> and entered my credentials.</p>
  
  <p>Here is my code (as derived from the python example of Vision API text detection):</p>
  
  <pre><code>import base64
  import os
  import re
  import sys
  
  from googleapiclient import discovery
  from googleapiclient import errors
  import nltk
  from nltk.stem.snowball import EnglishStemmer
  from oauth2client.client import GoogleCredentials
  import redis
  
  DISCOVERY_URL = 'https://{api}.googleapis.com/$discovery/rest?version={apiVersion}'  # noqa
  BATCH_SIZE = 10
  
  
  class VisionApi:
      """Construct and use the Google Vision API service."""
  
      def __init__(self, api_discovery_file='/home/saadq/Dev/Projects/TM-visual-search/credentials-key.json'):
          self.credentials = GoogleCredentials.get_application_default()
          print self.credentials.to_json()
          self.service = discovery.build(
              'vision', 'v1', credentials=self.credentials,
              discoveryServiceUrl=DISCOVERY_URL)
          print DISCOVERY_URL
  
      def detect_text(self, input_filenames, num_retries=3, max_results=6):
          """Uses the Vision API to detect text in the given file.
          """
          images = {}
          for filename in input_filenames:
              with open(filename, 'rb') as image_file:
                  images[filename] = image_file.read()
  
          batch_request = []
          for filename in images:
              batch_request.append({
                  'image': {
                      'content': base64.b64encode(
                              images[filename]).decode('UTF-8')
                  },
                  'features': [{
                      'type': 'TEXT_DETECTION',
                      'maxResults': max_results,
                  }]
              })
          request = self.service.images().annotate(
              body={'requests': batch_request})
  
          try:
              responses = request.execute(num_retries=num_retries)
              if 'responses' not in responses:
                  return {}
              text_response = {}
              for filename, response in zip(images, responses['responses']):
                  if 'error' in response:
                      print("API Error for %s: %s" % (
                              filename,
                              response['error']['message']
                              if 'message' in response['error']
                              else ''))
                      continue
                  if 'textAnnotations' in response:
                      text_response[filename] = response['textAnnotations']
                  else:
                      text_response[filename] = []
              return text_response
          except errors.HttpError as e:
              print("Http Error for %s: %s" % (filename, e))
          except KeyError as e2:
              print("Key error: %s" % e2)
  
  
  
  vision = VisionApi()
  print vision.detect_text(['test_article.png'])
  </code></pre>
  
  <p>This is the error message I am getting:</p>
  
  <pre><code>Http Error for test_article.png: &lt;HttpError 403 when requesting https://vision.googleapis.com/v1/images:annotate?alt=json returned "Google Cloud Vision API has not been used in project google.com:cloudsdktool before or it is disabled. Enable it by visiting https://console.developers.google.com/apis/api/vision.googleapis.com/overview?project=google.com:cloudsdktool then retry. If you enabled this API recently, wait a few minutes for the action to propagate to our systems and retry."&gt;
  </code></pre>
  
  <p>I want to be able to use my own project for the example and not the default (google.com:cloudsdktool).</p>