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Scale AI | Python SDK

Installation

$ pip install --upgrade scaleapi

Note: We strongly suggest using scaleapi with Python version 2.7.9 or greater due to SSL issues with prior versions.

Usage

import scaleapi
client = scaleapi.ScaleClient('YOUR_API_KEY_HERE')

Tasks

Most of these methods will return a scaleapi.Task object, which will contain information about the json response (task_id, status, etc.).

Any parameter available in Scale's API documentation can be passed as an argument option with the corresponding type.

The following endpoints for tasks are available:

Create Task

This method can be used for any Scale supported task type using the following format:

client.create_{{Task Type}}_task(...)

Passing in the applicable values into the function definition. The applicable fields and further information for each task type can be found in Scale's API documentation.

client.create_imageannotation_task(
    project = 'test_project',
    callback_url = "http://www.example.com/callback",
    instruction= "Draw a box around each baby cow and big cow.",
    attachment_type = "image",
    attachment = "http://i.imgur.com/v4cBreD.jpg",
    geometries = {
        "box": {
          "objects_to_annotate": ["Baby Cow", "Big Cow"],
          "min_height": 10,
          "min_width": 10
        }
    }
)

Retrieve task

Retrieve a task given its id. Check out Scale's API documentation for more information.

task = client.fetch_task('asdfasdfasdfasdfasdfasdf')
print(task.status)  // Task status ('pending', 'completed', 'error', 'canceled')
print(task.response) // If task is complete

List Tasks

Retrieve a list of tasks, with optional filter by start and end date/time. Paginated with next_token. The return value is a scaleapi.Tasklist, which acts as a list, but also has fields for the total number of tasks, the limit and offset, and whether or not there's more. Check out Scale's API documentation for more information.

next_token = None;
counter = 0
all_tasks =[]
while True:
    tasks = client.tasks(
        start_time = "2020-09-08",
        end_time = "2021-01-01",
        customer_review_status = "accepted",
        next_token = next_token,
    )
    for task in tasks:
        counter += 1
        print('Downloading Task %s | %s' % (counter, task.task_id))
        all_tasks.append(task.__dict__['param_dict'])
    next_token = tasks.next_token
    if next_token is None:
        break
print(all_tasks)

Cancel Task

Cancel a task given its id if work has not started on the task (task status is Queued in the UI). Check out Scale's API documentation for more information.

task = client.cancel_task('30553edd0b6a93f8f05f0fee')

Batches

Create Batch

Create a new Batch. Check out Scale's API documentation for more information.

client.create_batch(
    project = 'test_project',
    callback = "http://www.example.com/callback",
    name = 'batch_name_01_07_2021'
)

Finalize Batch

Finalize a Batch. Check out Scale's API documentation for more information.

client.finalize_batch(batch_name = 'batch_name_01_07_2021')

Check Batch Status

Get the status of a Batch. Check out Scale's API documentation for more information.

client.batch_status(batch_name = 'batch_name_01_07_2021')

Retrieve Batch

Retrieve a single Batch. Check out Scale's API documentation for more information.

client.get_batch(batch_name = 'batch_name_01_07_2021')

List Batches

Retrieve a list of Batches. Check out Scale's API documentation for more information.

next_token = None;
counter = 0
all_batchs =[]
while True:
    batches = client.list_batches(
        status = "completed"
    )
    for batch in batches:
        counter += 1
        print('Downloading Batch %s | %s | %s' % (counter, batch.name, batch.param_dict['status']))
        all_batchs.append(batch.__dict__['param_dict'])
    next_token = batches.next_token
    if next_token is None:
        break
print(all_batchs)

Projects

Create Project

Create a new Project. Check out Scale's API documentation for more information.

client.create_project(
    project_name = 'test_project',
    type = 'imageannotation,
    params = {'instruction':'Please label the kittens'}
)

Retrieve Project

Retrieve a single Project. Check out Scale's API documentation for more information.

client.get_project(project_name = 'test_project')

List Projects

This function does not take any arguments. Retrieve a list of every Project. Check out Scale's API documentation for more information.

counter = 0
projects = client.projects()
for project in projects:
    counter += 1
    print('Downloading project %s | %s | %s' % (counter, project['name'], project['type']))

Update Project

Creates a new version of the Project. Check out Scale's API documentation for more information.

data = client.update_project(
    project_name='test_project',
    pathc = false,
    instruction='update: Please label all the stuff',
)

Error handling

If something went wrong while making API calls, then exceptions will be raised automatically as a scaleapi.ScaleException or scaleapi.ScaleInvalidRequest runtime error. For example:

try
    client.create_categorization_task('Some parameters are missing.')
except scaleapi.ValidationError as e:
    print(e.code)  # 400
    print(e.message)  # missing param X

Troubleshooting

If you notice any problems, please email us at support@scale.com.