Download multiple file from Google cloud storage using Python

Question

I am trying to download multiple files from the Google cloud storage folder. I am able to download the single file but unable to download multiple files. I took this referen

Answer 1

After some trial, I solved this and couldn't stop myself from posting here as well.

bucket_name = 'mybucket'
folder='/projects/bigquery/download/shakespeare/'
delimiter='/'
file = 'shakespeare'

# Retrieve all blobs with a prefix matching the file.
bucket=storage_client.get_bucket(bucket_name)
# List blobs iterate in folder 
blobs=bucket.list_blobs(prefix=file, delimiter=delimiter) # Excluding folder inside bucket
for blob in blobs:
   print(blob.name)
   destination_uri = '{}/{}'.format(folder, blob.name) 
   blob.download_to_filename(destination_uri)

Answer 2

It looks like you may simply have the wrong level of indentation in your python code. The block beginning with # Retrieve all blobs with a prefix matching the folder is within the scope of the if above so it's never executed if the folder already exists.

Try this:

# [download multiple files]
bucket_name = 'bigquery-hive-load'
# The "folder" where the files you want to download are
folder="/projects/bigquery/download/shakespeare/"

# Create this folder locally
if not os.path.exists(folder):
    os.makedirs(folder)

# Retrieve all blobs with a prefix matching the folder
bucket=storage_client.get_bucket(bucket_name)
print(bucket)
blobs=list(bucket.list_blobs(prefix=folder))
print(blobs)
for blob in blobs:
    if(not blob.name.endswith("/")):
        blob.download_to_filename(blob.name)

# [End download to multiple files]