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

Getting the uploaded time of files in Google Cloud Storage

To get the uploaded time of a file (e.g. cat.png) in Google Cloud Storage (GCS), use the property time_created:


        
        
            
                
                
                    from google.cloud import storage

# The private key of our service account for authentication
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.get_blob('cat.png')
print(blob.time_created)
                
            
            2022-06-25 12:05:45.911000+00:00

Note the following:

the Bucket's method get_blob(~) must be used instead of blob(~) because get_blob(~) fetches the meta-information from GCS whereas blob(~) does not. This means that the blob object returned by blob(~) would always return None when accessing the time_created property.
the property time_created is of type datetime.datetime.
time_created represents the time (in UTC) when the file was uploaded on GCS instead of the time when the file was locally created

If you wanted to convert UTC time to your local time zone, we can use the built-in tz module:


        
        
            
                
                
                    from dateutil import tz
# Convert timezone of datetime from UTC to local
dt_local = blob.time_created.astimezone(tz.tzlocal())
print('Datetime in Local Time zone: ', dt_local)
                
            
            Datetime in Local Time zone:  2022-06-25 20:05:45.911000+08:00

Published by Isshin Inada

Edited by 0 others

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