Skip to main content

Python Client for Google Cloud Storage

Project description

This is a shared codebase for gcloud-rest-storage and gcloud-rest-storage

Latest PyPI Version (gcloud-rest-storage) Python Version Support (gcloud-rest-storage) Python Version Support (gcloud-rest-storage)


$ pip install --upgrade gcloud-{aio,rest}-storage


To upload a file, you might do something like the following:

import aiofiles
import aiohttp
from import Storage

async with aiohttp.ClientSession() as session:
    client = Storage(session=session)

    async with'/path/to/my/file', mode="r") as f:
        contents = await
        status = await client.upload(

Note that there are multiple ways to accomplish the above, ie,. by making use of the Bucket and Blob convenience classes if that better fits your use-case.

Of course, the major benefit of using an async library is being able to parallelize operations like this. Since gcloud-rest-storage is fully asyncio-compatible, you can use any of the builtin asyncio method to perform more complicated operations:

my_files = {
    '/local/path/to/file.1': 'path/in/gcs.1',
    '/local/path/to/file.2': 'path/in/gcs.2',
    '/local/path/to/file.3': 'different/gcs/path/filename.3',

async with Storage() as client:
    # Prepare all our upload data
    uploads = []
    for local_name, gcs_name in my_files.items():
        async with, mode="r") as f:
            contents = await
            uploads.append((gcs_name, contents))

    # Simultaneously upload all files
    await asyncio.gather(
            client.upload('my-bucket-name', path, file_) for path, file_ in uploads

You can also refer smoke test for more info and examples.

Note that you can also let gcloud-rest-storage do its own session management, so long as you give us a hint when to close that session:

async with Storage() as client:
    # closes the client.session on leaving the context manager

# OR

client = Storage()
# do stuff
await client.close()  # close the session explicitly

File Encodings

In some cases, aiohttp needs to transform the objects returned from GCS into strings, eg. for debug logging and other such issues. The built-in await response.text() operation relies on chardet for guessing the character encoding in any cases where it can not be determined based on the file metadata.

Unfortunately, this operation can be extremely slow, especially in cases where you might be working with particularly large files. If you notice odd latency issues when reading your results, you may want to set your character encoding more explicitly within GCS, eg. by ensuring you set the contentType of the relevant objects to something suffixed with ; charset=utf-8. For example, in the case of contentType='application/x-netcdf' files exhibiting latency, you could instead set contentType='application/x-netcdf; charset=utf-8. See #172 for more info!


For testing purposes, you may want to use gcloud-rest-storage along with a local GCS emulator. Setting the $STORAGE_EMULATOR_HOST environment variable to the address of your emulator should be enough to do the trick.

For example, using fsouza/fake-gcs-server, you can do:

docker run -d -p 4443:4443 -v $PWD/my-sample-data:/data fsouza/fake-gcs-server

Any gcloud-rest-storage requests made with that environment variable set will query fake-gcs-server instead of the official GCS API.

Note that some emulation systems require disabling SSL – if you’re using a custom http session, you may need to disable SSL verification.


Please see our contributing guide.

Project details

Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Files for gcloud-rest-storage, version 6.3.0
Filename, size File type Python version Upload date Hashes
Filename, size gcloud_rest_storage-6.3.0-py2.py3-none-any.whl (25.7 kB) File type Wheel Python version py2.py3 Upload date Hashes View
Filename, size gcloud-rest-storage-6.3.0.tar.gz (19.0 kB) File type Source Python version None Upload date Hashes View

Supported by

AWS AWS Cloud computing Datadog Datadog Monitoring Facebook / Instagram Facebook / Instagram PSF Sponsor Fastly Fastly CDN Google Google Object Storage and Download Analytics Huawei Huawei PSF Sponsor Microsoft Microsoft PSF Sponsor NVIDIA NVIDIA PSF Sponsor Pingdom Pingdom Monitoring Salesforce Salesforce PSF Sponsor Sentry Sentry Error logging StatusPage StatusPage Status page