Question

在Watson Studio中我在Jupyter Notebook中编写代码以使用Watson Visual Recognition自定义模型。它适用于外部图像。我还没有能够参考我上传到项目资产的图片。资产的网址只显示整页，而不是图片： https://dataplatform.ibm.com/projects/2f4b89d9-b93a-4c98-a327-9b863a467b7c/data-assets/ed16c385-e09e-4bcb-bfab-67ee864538e4/?context=data

谢谢

Answer 1

在Watson中，资产文件保存在Cloud Object Store或COS中。您必须将图像从COS下载到笔记本服务器文件系统，然后您可以将笔记本中的文件称为常规本地文件。 / p>

我使用cos api来获取文件。 https://github.com/IBM/ibm-cos-sdk-python

https://console.bluemix.net/docs/services/cloud-object-storage/libraries/python.html#using-python

首先，找出你的凭据是什么

突出显示笔记本电脑，
点击数据菜单，
选择文件，
＆＃34;插入代码＆＃34;
凭证。

然后，您可以使用API将文件下载到本地磁盘存储。例如，要从COS下载文件：

# The following code contains the credentials for a file in your IBM Cloud Object Storage. 
# You might want to remove those credentials before you share your notebook.
credentials_1 = {
    'IBM_API_KEY_ID': '**************************************',
    'IAM_SERVICE_ID': 'iam-ServiceId-**************************',
    'ENDPOINT': 'https://s3-api.us-geo.objectstorage.service.networklayer.com',
    'IBM_AUTH_ENDPOINT': 'https://iam.ng.bluemix.net/oidc/token',
    'BUCKET': '********************************',
    'FILE': 'file.xlsx'
}

from ibm_botocore.client import Config
import ibm_boto3
def download_file_cos(credentials, local_file_name, key):  
    cos = ibm_boto3.client(service_name='s3',
    ibm_api_key_id=credentials['IBM_API_KEY_ID'],
    ibm_service_instance_id=credentials['IAM_SERVICE_ID'],
    ibm_auth_endpoint=credentials['IBM_AUTH_ENDPOINT'],
    config=Config(signature_version='oauth'),
    endpoint_url=credentials['ENDPOINT'])
    try:
        res=cos.download_file(Bucket=credentials['BUCKET'], Key=key, Filename=local_file_name)
    except Exception as e:
        print(Exception, e)
    else:
        print("Dowloaded:", key, 'from IBM COS to local:', local_file_name)

在Notebook单元格列表目录内容中：

%%script bash
ls -l


# to list all .png files in COS you can use a function like this:        
def list_objects(credentials):  
    cos = ibm_boto3.client(service_name='s3',
    ibm_api_key_id=credentials['IBM_API_KEY_ID'],
    ibm_service_instance_id=credentials['IAM_SERVICE_ID'],
    ibm_auth_endpoint=credentials['IBM_AUTH_ENDPOINT'],
    config=Config(signature_version='oauth'),
    endpoint_url=credentials['ENDPOINT'])
    return cos.list_objects(Bucket=credentials['BUCKET'])

response = list_objects(credentials_1)
for c in response['Contents']:
    if c['Key'].endswith('.png'):
        print(c['Key'], "last modified:", c['LastModified'])

在Watson Studio的Jupyter笔记本中，如何引用上传到＆＃34; assets＆＃34;？的文件

1 个答案: