created a service account and downloaded the private key (JSON file) for authentication (please check out my detailed guide)
installed the Python client library for Google Cloud Storage:
pip install --upgrade google-cloud-storage

Checking if a file exists on Google Cloud Storage

To check if a file exists in Google Cloud Storage using Python, use the Blob.exists() method which returns a Boolean:


        
        
            
                
                
                    from google.cloud import storage

# Authenticate ourselves using the private key of our service account
path_to_private_key = './gcs-project-354207-099ef6796af6.json'
client = storage.Client.from_service_account_json(json_credentials_path=path_to_private_key)

bucket = storage.Bucket(client, 'example-bucket-skytowner')
blob = bucket.blob('cat.png')
blob.exists()
                
            
            True

Here, note the following:

gcs-project-354207-099ef6796af6.json is the name of the credential JSON file for the service account. This file is located in the same directory as this Python script.
we are checking whether the file cat.png exists - and yes, it does!

Published by Isshin Inada

Edited by 0 others

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