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Python “谷歌Api愿景”；在“请求”之前；错误

python api

Python “谷歌Api愿景”；在“请求”之前；错误,python,api,Python,Api,所以我尝试使用谷歌的视觉api，它需要识别标签、面部和文本检测……等等 但不幸的是，我无法修复导致我们落后的错误 源代码 import io import os # Imports the Google Cloud client library from google.cloud import vision from google.cloud.vision import types from google.cloud import storage def getCredentials():

所以我尝试使用谷歌的视觉api，它需要识别标签、面部和文本检测……等等

但不幸的是，我无法修复导致我们落后的错误

源代码

import io
import os

# Imports the Google Cloud client library
from google.cloud import vision
from google.cloud.vision import types
from google.cloud import storage

def getCredentials():
    storage_client = storage.Client.from_service_account_json(
            'eyeHear-cad56858f9be.json')
    return storage_client
    # buckets = list(storage_client.list_buckets())
    # print(buckets)

def instantiateClient():
    # Instantiates a client
    client = vision.ImageAnnotatorClient(
        credentials=getCredentials())

    # The name of the image file to annotate
    file_name = os.path.join(
        os.path.dirname(__file__),
        'images/demo-image.jpg')

    # Loads the image into memory
    with io.open(file_name, 'rb') as image_file:
        content = image_file.read()

    image = types.Image(content=content)

    # Performs label detection on the image file
    response = client.label_detection(image=image)
    # labels = response.label_annotations

    # print('Labels:')
    # for label in labels:
    #     print(label.description)
它说“Client”对象没有属性，“before_request”

这就是我被困的地方，我不知道从那以后该怎么办

错误

ERROR:root:AuthMetadataPluginCallback "<google.auth.transport.grpc.AuthMetadataPlugin object at 0x104746ef0>" raised exception!
Traceback (most recent call last):
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/grpc/_plugin_wrapping.py", line 77, in _call_
    callback_state, callback))
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/google/auth/transport/grpc.py", line 77, in _call_
    callback(self._get_authorization_headers(context), None)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/google/auth/transport/grpc.py", line 61, in _get_authorization_headers
    self._credentials.before_request(
AttributeError: 'Client' object has no attribute 'before_request'
Traceback (most recent call last):
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/google/api_core/grpc_helpers.py", line 54, in error_remapped_callable
    return callable_(*args, **kwargs)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/grpc/_channel.py", line 487, in _call_
    return _end_unary_response_blocking(state, call, False, deadline)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/grpc/_channel.py", line 437, in _end_unary_response_blocking
    raise _Rendezvous(state, None, None, deadline)
grpc._channel._Rendezvous: <_Rendezvous of RPC that terminated with (StatusCode.UNAVAILABLE, Getting metadata from plugin failed with error: 'Client' object has no attribute 'before_request')>

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "testAPI.py", line 43, in <module>
    run_quickstart()
  File "testAPI.py", line 33, in run_quickstart
    response = client.text_detection(image=image)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/google/cloud/vision_helpers/decorators.py", line 110, in inner
    return self.annotate_image(request, retry=retry, timeout=timeout)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/google/cloud/vision_helpers/__init__.py", line 67, in annotate_image
    r = self.batch_annotate_images([request], retry=retry, timeout=timeout)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/google/cloud/vision_v1/gapic/image_annotator_client.py", line 158, in batch_annotate_images
    request, retry=retry, timeout=timeout)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/google/api_core/gapic_v1/method.py", line 139, in _call_
    return wrapped_func(*args, **kwargs)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/google/api_core/grpc_helpers.py", line 56, in error_remapped_callable
    six.raise_from(exceptions.from_grpc_error(exc), exc)
  File "<string>", line 3, in raise_from
google.api_core.exceptions.ServiceUnavailable: 503 Getting metadata from plugin failed with error: 'Client' object has no attribute 'before_request'

错误：root:AuthMetadataPluginCallback“”引发异常！
回溯（最近一次呼叫最后一次）：
文件“/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site packages/grpc/\u plugin\u wrapping.py”，第77行，在调用中_
回调（状态，回调）
文件“/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site packages/google/auth/transport/grpc.py”，第77行，在_
回调（self.\u获取\u授权\u头（上下文），无）
文件“/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site packages/google/auth/transport/grpc.py”，第61行，在“获取授权”标题中
自我认证。在请求之前(
AttributeError:“客户端”对象没有“在请求之前”属性
回溯（最近一次呼叫最后一次）：
文件“/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site packages/google/api\u core/grpc\u helpers.py”，第54行，错误为\u重新映射\u可调用
返回可调用函数（*args，**kwargs）
文件“/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site packages/grpc/_channel.py”，第487行，在调用中_
返回\u结束\u一元\u响应\u阻塞（状态、呼叫、错误、截止日期）
文件“/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site packages/grpc/_channel.py”，第437行，在一元响应中
提升集合点（状态，无，无，截止日期）
grpc._通道_会合点：
上述异常是以下异常的直接原因：
回溯（最近一次呼叫最后一次）：
文件“testAPI.py”，第43行，在
运行快速启动（）
运行快速启动中第33行的文件“testAPI.py”
响应=客户端.text\u检测（图像=图像）
文件“/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site packages/google/cloud/vision\u helpers/decorators.py”，第110行，内部
返回self.annotate_映像（请求，重试=重试，超时=超时）
文件“/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site packages/google/cloud/vision\u helpers/\uuuuuuu init\uuuuuu.py”，第67行，在annotate\u图像中
r=self.batch\u注释图像（[request]，retry=retry，timeout=timeout）
文件“/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site packages/google/cloud/vision\u v1/gapic/image\u annotator\u client.py”，第158行，在批注释图像中
请求，重试=重试，超时=超时）
文件“/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site packages/google/api_core/gapic_v1/method.py”，第139行，in_call_
返回包装函数（*args，**kwargs）
文件“/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site packages/google/api\u core/grpc\u helpers.py”，第56行，错误为\u重新映射\u可调用
六、从（例外情况。从grpc错误（exc），exc）
文件“”，第3行，从
google.api_core.exceptions.ServiceUnavailable:503从插件获取元数据失败，错误为：“客户端”对象没有“before_请求”属性
奇怪，我让它运行起来了。我必须在对os.environ的调用中直接声明凭据的路径。也许尝试一下，而不是使用“从存储”方法

import io
import os

# Imports the Google Cloud client library
from google.cloud import vision
from google.cloud.vision import types

os.environ["GOOGLE_APPLICATION_CREDENTIALS"] = "/Users/jeff/Downloads/test_client.json"

# Instantiates a client
client = vision.ImageAnnotatorClient()

# The name of the image file to annotate
file_name = os.path.join(
    os.path.dirname(__file__),
    'collie.jpg')

# Loads the image into memory
with io.open(file_name, 'rb') as image_file:
    content = image_file.read()

image = types.Image(content=content)

# Performs label detection on the image file
response = client.label_detection(image=image)
labels = response.label_annotations

print('Labels:')
for label in labels:
    print(label.description)
产出为：

dog
dog breed
dog like mammal
dog breed group
border collie
karelian bear dog
snout
native american indian dog
icelandic sheepdog
canadian eskimo dog
输入是

wget https://upload.wikimedia.org/wikipedia/commons/thumb/b/b1/Border_Collie_liver_portrait.jpg/220px-Border_Collie_liver_portrait.jpg
然后重命名为collie.jpg

如果在InstanceClient中，您只需返回客户端并注释掉图像加载代码，那么客户端是否实际根据API进行身份验证？如果让我猜的话，这似乎是问题的根源。你什么意思？你能在下面的部分回答中解释更多吗？Wit没有给出错误，但是当我运行它时，什么也没有发生，因为图像没有链接到“InstanceClient方法”更新了我的答案-尝试用os.environ更改你的身份验证策略