How to add progress bar when downloading large files.

[shahanaz873]

I am downloading a large file (5GB) from the bucket. How to show progress bar when blob.download_to_filename(destination_file_name) starts and ends

[busunkim96]

Hi, it looks like this isn't currently a feature of the library. See googleapis/python-storage#27.

Someone did post a workaround which may work for you.

[shahanaz873]

@busunkim96 I followed the above workaround but how to read the source file from the bucket to download.

blob_name = config_data['name']
blob = bucket.get_blob(blob_name)
size = blob.size
content_type = blob.content_type
try:
     with open(blob, "wb") as in_file:
     total_bytes = os.fstat(in_file.fileno()).st_size
     with tqdm.wrapattr(blob, "read", total=size, miniters=1, desc="Downloading") as destination_file_name:
     blob.download_to_filename(destination_file_name, content_type=content_type, size=size)
     return blob
except Exception as e: