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Checking if file exists in Google Cloud Storage using Python

Cloud Computing
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Google Cloud Platform
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Cloud Storage
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Python client library
schedule Jul 1, 2022
Last updated
local_offer Cloud Computing
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Prerequisites

To follow along with this guide, please make sure to have:

  • 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!

robocat
Published by Isshin Inada
Edited by 0 others
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