scaleapi-python-client
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scaleapi
The official Python SDK for Scale API, the Data Platform for AI
Scale AI | Python SDK
If you use earlier versions of the SDK, please refer to v1.0.4 documentation <https://github.com/scaleapi/scaleapi-python-client/blob/release-1.0.4/README.rst>_.
If you are migrating from earlier versions to v2, please refer to Migration Guide to v2 <https://github.com/scaleapi/scaleapi-python-client/blob/master/docs/migration_guide.md>_.
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Installation
Install with PyPI (pip)
.. code-block:: bash
$ pip install --upgrade scaleapi
or install with Anaconda (conda)
.. code-block:: bash
$ conda install -c conda-forge scaleapi
Usage
.. code-block:: python
import scaleapi
client = scaleapi.ScaleClient("YOUR_API_KEY_HERE")
If you need to use a proxy to connect Scale API, you can feed proxies, cert and verify attributes of the python requests package during the client initialization.
Proxy support is available with SDK version 2.14.0 and beyond.
Documentation of Proxies usage in requests package__
__ https://requests.readthedocs.io/en/latest/user/advanced/#proxies
.. code-block:: python
proxies = { 'https': 'http://10.10.1.10:1080' }
client = scaleapi.ScaleClient(
api_key="YOUR_API_KEY_HERE",
proxies=proxies,
cert='/path/client.cert',
verify=True
)
Tasks
Most of these methods will return a scaleapi.Task object, which will contain information
about the json response (task_id, status, params, response, etc.).
Any parameter available in Scale's API documentation__ can be passed as an argument option with the corresponding type.
__ https://docs.scale.com/reference#tasks-object-overview
The following endpoints for tasks are available:
Create Task ^^^^^^^^^^^
This method can be used for any Scale supported task type using the following format:
.. code-block:: python
client.create_task(TaskType, ...task parameters...)
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__.
__ https://docs.scale.com/reference
.. code-block:: python
from scaleapi.tasks import TaskType
from scaleapi.exceptions import ScaleDuplicateResource
payload = dict(
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",
unique_id = "c235d023af73",
geometries = {
"box": {
"objects_to_annotate": ["Baby Cow", "Big Cow"],
"min_height": 10,
"min_width": 10,
}
},
)
try:
client.create_task(TaskType.ImageAnnotation, **payload)
except ScaleDuplicateResource as err:
print(err.message) # If unique_id is already used for a different task
Retrieve a task ^^^^^^^^^^^^^^^
Retrieve a task given its id. Check out Scale's API documentation__ for more information.
__ https://docs.scale.com/reference#retrieve-tasks
.. code-block :: python
task = client.get_task("30553edd0b6a93f8f05f0fee")
print(task.status) # Task status ("pending", "completed", "error", "canceled")
print(task.response) # If task is complete
Task Attributes ^^^^^^^^^^^^^^^
The older param_dict attribute is now replaced with a method as_dict() to return a task's all attributes as a dictionary (JSON).
.. code-block :: python
task.as_dict()
# {
# 'task_id': '30553edd0b6a93f8f05f0fee',
# 'created_at': '2021-06-17T21:46:36.359Z',
# 'type': 'imageannotation',
# 'status': 'pending',
# ....
# 'params': {
# 'attachment': 'http://i.imgur.com/v4cBreD.jpg',
# 'attachment_type': 'image',
# 'geometries': {
# 'box': {
# 'objects_to_annotate': ['Baby Cow', 'Big Cow'],
# 'min_height': 10,
# 'min_width': 10,
# ...
# },
# 'project': 'My Project',
# ...
# }
First-level attributes of Task are also accessible with . annotation as the following:
.. code-block :: python
task.status # same as task.as_dict()["status"]
task.params["geometries"] # same as task.as_dict()["params"]["geometries"]
task.response["annotations"] # same as task.as_dict()["response"]["annotations"]
Accessing task.params child objects directly at task level is deprecated. Instead of task.attribute, you should use task.params["attribute"] for accessing objects under params.
.. code-block :: python
task.params["geometries"] # task.geometries is DEPRECATED
task.params["attachment"] # task.attachment is DEPRECATED
If you use the limited_response = True filter in get_tasks(), you will only receive the following attributes: task_id, status, metadata, project and otherVersion.
Retrieve List of Tasks ^^^^^^^^^^^^^^^^^^^^^^
Retrieve a list of Task objects, with filters for: project_name, batch_name, type, status,
review_status, unique_id, completed_after, completed_before, updated_after, updated_before,
created_after, created_before, tags and limited_response.
get_tasks() is a generator method and yields Task objects.
A generator is another type of function, returns an iterable that you can loop over like a list. However, unlike lists, generators do not store the content in the memory. That helps you to process a large number of objects without increasing memory usage.
If you will iterate through the tasks and process them once, using a generator is the most efficient method.
However, if you need to process the list of tasks multiple times, you can wrap the generator in a list(...)
statement, which returns a list of Tasks by loading them into the memory.
Check out Scale's API documentation__ for more information.
__ https://docs.scale.com/reference#list-multiple-tasks
.. code-block :: python
from scaleapi.tasks import TaskReviewStatus, TaskStatus
tasks = client.get_tasks(
project_name = "My Project",
created_after = "2020-09-08",
completed_before = "2021-04-01",
status = TaskStatus.Completed,
review_status = TaskReviewStatus.Accepted
)
# Iterating through the generator
for task in tasks:
# Download task or do something!
print(task.task_id)
# For retrieving results as a Task list
task_list = list(tasks)
print(f"{len(task_list)} tasks retrieved")
Get Tasks Count ^^^^^^^^^^^^^^^
get_tasks_count() method returns the number of tasks with the given optional parameters for: project_name, batch_name, type, status,
review_status, unique_id, completed_after, completed_before, updated_after, updated_before,
created_after, created_before and tags.
.. code-block :: python
from scaleapi.tasks import TaskReviewStatus, TaskStatus
task_count = client.get_tasks_count(
project_name = "My Project",
created_after = "2020-09-08",
completed_before = "2021-04-01",
status = TaskStatus.Completed,
review_status = TaskReviewStatus.Accepted
)
print(task_count) # 1923
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.
__ https://docs.scale.com/reference#cancel-task
.. code-block :: python
task = client.cancel_task('30553edd0b6a93f8f05f0fee')
# If you also want to clear 'unique_id' of a task while canceling
task = client.cancel_task('30553edd0b6a93f8f05f0fee', clear_unique_id=True)
# cancel() is also available on task object
task = client.get_task('30553edd0b6a93f8f05f0fee')
task.cancel()
# If you also want to clear 'unique_id' of a task while canceling
task.cancel(clear_unique_id=True)
Audit a Task ^^^^^^^^^^^^
This method allows you to accept or reject completed tasks, along with support for adding comments about the reason for the given audit status, mirroring our Audit UI.
Check out Scale's API documentation__ for more information.
__ https://docs.scale.com/reference/audit-a-task
.. code-block :: python
# Accept a completed task by submitting an audit
client.audit_task('30553edd0b6a93f8f05f0fee', True)
# Reject a completed task by submitting a comment with the audit
client.audit_task('30553edd0b6a93f8f05f0fee', False, 'Rejected due to quality')
# audit() is also available on Task object
task = client.get_task('30553edd0b6a93f8f05f0fee')
task.audit(True)
Update A Task's Unique Id ^^^^^^^^^^^^^^^^^^^^^^^^^
Update a given task's unique_id. Check out Scale's API documentation__ for more information.
__ https://docs.scale.com/reference/update-task-unique-id
.. code-block :: python
task = client.update_task_unique_id('30553edd0b6a93f8f05f0fee', "new_unique_id")
# update_unique_id() is also available on task object
task = client.get_task('30553edd0b6a93f8f05f0fee')
task.update_unique_id("new_unique_id")
Clear A Task's Unique Id ^^^^^^^^^^^^^^^^^^^^^^^^^
Clear a given task's unique_id. Check out Scale's API documentation__ for more information.
__ https://docs.scale.com/reference/delete-task-unique-id
.. code-block :: python
task = client.clear_task_unique_id('30553edd0b6a93f8f05f0fee')
# clear_unique_id() is also available on task object
task = client.get_task('30553edd0b6a93f8f05f0fee')
task.clear_unique_id()
Set A Task's Metadata ^^^^^^^^^^^^^^^^^^^^^^^^^
Set a given task's metadata. Check out Scale's API documentation__ for more information.
__ https://docs.scale.com/reference/set-metadata
.. code-block :: python
# set metadata on a task by specifying task id
new_metadata = {'myKey': 'myValue'}
task = client.set_task_metadata('30553edd0b6a93f8f05f0fee', new_metadata)
# set metadata on a task object
task = client.get_task('30553edd0b6a93f8f05f0fee')
new_metadata = {'myKey': 'myValue'}
task.set_metadata(new_metadata)
Set A Task's Tags ^^^^^^^^^^^^^^^^^^^^^^^^^
Set a given task's tags. This will replace all existing tags on a task. Check out Scale's API documentation__ for more information.
__ https://docs.scale.com/reference/setting-tags
.. code-block :: python
# set a list of tags on a task by specifying task id
new_tags = ["tag1", "tag2", "tag3"]
task = client.set_task_tags('30553edd0b6a93f8f05f0fee', new_tags)
# set a list of tags on a task object
task = client.get_task('30553edd0b6a93f8f05f0fee')
new_tags = ["tag1", "tag2", "tag3"]
task.set_tags(new_tags)
Add Tags to A Task ^^^^^^^^^^^^^^^^^^^^^^^^^
Add tags to a given task. Check out Scale's API documentation__ for more information.
__ https://docs.scale.com/reference/adding-tags
.. code-block :: python
# add a list of tags on a task by specifying task id
tags_to_add = ["tag4", "tag5"]
task = client.add_task_tags('30553edd0b6a93f8f05f0fee', tags_to_add)
# add a list of tags on a task object
task = client.get_task('30553edd0b6a93f8f05f0fee')
tags_to_add = ["tag4", "tag5"]
task.add_tags(tags_to_add)
Delete Tags from A Task ^^^^^^^^^^^^^^^^^^^^^^^^^
Delete tags from a given task. Check out Scale's API documentation__ for more information.
__ https://docs.scale.com/reference/deleting-tags
.. code-block :: python
# delete a list of tags on a task by specifying task id
tags_to_delete = ["tag1", "tag2"]
task = client.delete_task_tags('30553edd0b6a93f8f05f0fee', tags_to_delete)
# delete a list of tags on a task object
task = client.get_task('30553edd0b6a93f8f05f0fee')
tags_to_delete = ["tag1", "tag2"]
task.delete_tags(tags_to_delete)
Batches
Create Batch ^^^^^^^^^^^^
Create a new Batch. Check out Scale's API documentation__ for more information.
__ https://docs.scale.com/reference#batch-creation
.. code-block:: python
batch = client.create_batch(
project = "test_project",
callback = "http://www.example.com/callback",
batch_name = "batch_name_01_07_2021"
)
print(batch.name) # batch_name_01_07_2021
Throws ScaleDuplicateResource exception if a batch with the same name already exists.
Finalize Batch ^^^^^^^^^^^^^^^
Finalize a Batch. Check out Scale's API documentation__ for more information.
__ https://docs.scale.com/reference#batch-finalization
.. code-block:: python
client.finalize_batch(batch_name="batch_name_01_07_2021")
# Alternative method
batch = client.get_batch(batch_name="batch_name_01_07_2021")
batch.finalize()
Check Batch Status ^^^^^^^^^^^^^^^^^^
Get the status of a Batch. Check out Scale's API documentation__ for more information.
__ https://docs.scale.com/reference#batch-status
.. code-block:: python
client.batch_status(batch_name = "batch_name_01_07_2021")
# Alternative via Batch.get_status()
batch = client.get_batch("batch_name_01_07_2021")
batch.get_status() # Refreshes tasks_{status} attributes of Batch
print(batch.tasks_pending, batch.tasks_completed)
Retrieve A Batch ^^^^^^^^^^^^^^^^
Retrieve a single Batch. Check out Scale's API documentation__ for more information.
__ https://docs.scale.com/reference#batch-retrieval
.. code-block:: python
batch = client.get_batch(batch_name = "batch_name_01_07_2021")
The older param_dict attribute is now replaced with a method batch.as_dict() to return a batch's all attributes as a dictionary (JSON).
List Batches ^^^^^^^^^^^^
Retrieve a list of Batches. Optional parameters are project_name, batch_status, exclude_archived, created_after and created_before.
get_batches() is a generator method and yields Batch objects.
A generator is another type of function, returns an iterable that you can loop over like a list. However, unlike lists, generators do not store the content in the memory. That helps you to process a large number of objects without increasing memory usage.
When wrapped in a list(...) statement, it returns a list of Batches by loading them into the memory.
Check out Scale's API documentation__ for more information.
__ https://docs.scale.com/reference#batch-list
.. code-block :: python
from scaleapi.batches import BatchStatus
batches = client.get_batches(
batch_status=BatchStatus.Completed,
created_after = "2020-09-08"
)
counter = 0
for batch in batches:
counter += 1
print(f"Downloading batch {counter} | {batch.name} | {batch.project}")
# Alternative for accessing as a Batch list
batch_list = list(batches)
print(f"{len(batch_list))} batches retrieved")
Projects
Create Project ^^^^^^^^^^^^^^
Create a new Project. Check out Scale's API documentation__ for more information.
__ https://docs.scale.com/reference#project-creation
.. code-block:: python
from scaleapi.tasks import TaskType
project = client.create_project(
project_name = "Test_Project",
task_type = TaskType.ImageAnnotation,
params = {"instruction": "Please label the kittens"},
)
print(project.name) # Test_Project
Specify rapid=true for Rapid projects and studio=true for Studio projects. Throws ScaleDuplicateResource exception if a project with the same name already exists.
Retrieve Project ^^^^^^^^^^^^^^^^
Retrieve a single Project. Check out Scale's API documentation__ for more information.
__ https://docs.scale.com/reference#project-retrieval
.. code-block:: python
project = client.get_project(project_name = "test_project")
The older param_dict attribute is now replaced with a method project.as_dict() to return a project's all attributes as a dictionary (JSON).
List Projects ^^^^^^^^^^^^^
This function does not take any arguments. Retrieve a list of every Project.
Check out Scale's API documentation__ for more information.
__ https://docs.scale.com/reference#batch-list
.. code-block :: python
counter = 0
projects = client.projects()
for project in projects:
counter += 1
print(f'Downloading project {counter} | {project.name} | {project.type}')
Update Project ^^^^^^^^^^^^^^
Creates a new version of the Project. Check out Scale's API documentation__ for more information.
__ https://docs.scale.com/reference#project-update-parameters
.. code-block :: python
data = client.update_project(
project_name="test_project",
patch=False,
instruction="update: Please label all the stuff",
)
Files
Files are a way of uploading local files directly to Scale storage or importing files before creating tasks.
Upload Files ^^^^^^^^^^^^^^
Upload a file. Check out Scale's API documentation__ for more information.
__ https://docs.scale.com/reference#file-upload-1
.. code-block:: python
with open(file_name, 'rb') as f:
my_file = client.upload_file(
file=f,
project_name = "test_project",
)
The file.attachment_url can be used in place of attachments in task payload.
.. code-block:: python
my_file.as_dict()
# {
# 'attachment_url': 'scaledata://606e2a0a46102303a130949/8ac09a90-c143-4154-9a9b-6c35121396d1f',
# 'created_at': '2021-06-17T21:56:53.825Z',
# 'id': '8ac09d70-ca43-4354-9a4b-6c3591396d1f',
# 'mime_type': 'image/png',
# 'project_names': ['test_project'],
# 'size': 340714,
# 'updated_at': '2021-06-17T21:56:53.825Z'
# }
Import Files ^^^^^^^^^^^^^^
Import a file from a URL. Check out Scale's API documentation__ for more information.
__ https://docs.scale.com/reference#file-import-1
.. code-block:: python
my_file = client.import_file(
file_url="http://i.imgur.com/v4cBreD.jpg",
project_name = "test_project",
)
After the files are successfully uploaded to Scale's storage, you can access the URL as my_file.attachment_url, which will have a prefix like scaledata://.
The attribute can be passed to the task payloads, in the attachment parameter.
.. code-block:: python
task_payload = dict( ... ... attachment_type = "image", attachment = my_file.attachment_url, # scaledata://606e2a30949/89a90-c143-4154-9a9b-6c36d1f ... ... )
Manage Teammates
Manage the members of your Scale team via API. Check out Scale Team API Documentation__ for more information.
__ https://docs.scale.com/reference/teams-overview
List Teammates ^^^^^^^^^^^^^^
Lists all teammates in your Scale team. Returns all teammates in a List of Teammate objects.
.. code-block:: python
teammates = client.list_teammates()
Invite Teammate ^^^^^^^^^^^^^^^
Invites a list of email strings to your team with the provided role. The available teammate roles are: 'labeler', 'member', or 'manager'. Returns all teammates in a List of Teammate objects.
.. code-block:: python
from scaleapi import TeammateRole
teammates = client.invite_teammates(['[email protected]', '[email protected]'], TeammateRole.Member)
Update Teammate Role ^^^^^^^^^^^^^^^^^^^^^
Updates a list of emails of your Scale team members with the new role. The available teammate roles are: 'labeler', 'member', or 'manager'. Returns all teammates in a List of Teammate objects.
.. code-block python
from scaleapi import TeammateRole
teammates = client.update_teammates_role(['[email protected]', '[email protected]'], TeammateRole.Manager)
Example Scripts
A list of examples scripts for use.
-
cancel_batch.py__ to concurrently cancel tasks in batches
__ https://github.com/scaleapi/scaleapi-python-client/blob/master/examples/cancel_batch.py
Evaluation tasks (For Scale Rapid projects only)
Evaluation tasks are tasks that we know the answer to and are used to measure workers' performance internally to ensure the quality
Create Evaluation Task ^^^^^^^^^^^^^^^^^^^^^^
Create an evaluation task.
.. code-block:: python
client.create_evaluation_task(TaskType, ...task parameters...)
Passing in the applicable values into the function definition. The applicable fields are the same as for create_task. Applicable fields for each task type can be found in Scale's API documentation__. Additionally an expected_response is required. An optional initial_response can be provided if it's for a review phase evaluation task.
__ https://docs.scale.com/reference
.. code-block:: python
from scaleapi.tasks import TaskType
expected_response = {
"annotations": {
"answer_reasonable": {
"type": "category",
"field_id": "answer_reasonable",
"response": [
[
"no"
]
]
}
}
}
initial_response = {
"annotations": {
"answer_reasonable": {
"type": "category",
"field_id": "answer_reasonable",
"response": [
[
"yes"
]
]
}
}
}
attachments = [
{"type": "image", "content": "https://i.imgur.com/bGjrNzl.jpeg"}
]
payload = dict(
project = "test_project",
attachments,
initial_response=initial_response,
expected_response=expected_response,
)
client.create_evaluation_task(TaskType.TextCollection, **payload)
Training tasks (For Scale Rapid projects only)
Training tasks are used to onboard taskers onto your project
Create Training Task ^^^^^^^^^^^^^^^^^^^^^^
Create a training task.
.. code-block:: python
client.create_training_task(TaskType, ...task parameters...)
Studio Assignments (For Scale Studio only)
Manage project assignments for your labelers.
List All Assignments ^^^^^^^^^^^^^^^^^^^^
Lists all your Scale team members and the projects they are assigned to. Returns a dictionary of all teammate assignments with keys as 'emails' of each teammate, and values as a list of project names the teammate are assigned to.
.. code-block:: python
assignments = client.list_studio_assignments()
my_assignment = assignments.get('[email protected]')
Add Studio Assignment ^^^^^^^^^^^^^^^^^^^^^
Assigns provided projects to specified teammate emails.
Accepts a list of emails and a list of projects.
Returns a dictionary of all teammate assignments with keys as 'emails' of each teammate, and values as a list of project names the teammate are assigned to.
.. code-block:: python
assignments = client.add_studio_assignments(['[email protected]', '[email protected]'], ['project 1', 'project 2'])
Remove Studio Assignment ^^^^^^^^^^^^^^^^^^^^^^^^
Removes provided projects from specified teammate emails.
Accepts a list of emails and a list of projects.
Returns a dictionary of all teammate assignments with keys as 'emails' of each teammate, and values as a list of project names the teammate are assigned to.
.. code-block:: python
assignments = client.remove_studio_assignments(['[email protected]', '[email protected]'], ['project 1', 'project 2'])
Studio Project Groups (For Scale Studio Only)
Manage groups of labelers in our project by using Studio Project Groups.
List Studio Project Groups ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Returns all labeler groups for the specified project.
.. code-block:: python
list_project_group = client.list_project_groups('project_name')
Add Studio Project Group ^^^^^^^^^^^^^^^^^^^^^^^^
Creates a project group with the provided group_name for the specified project and adds the provided teammate emails to the new project group. The team members must be assigned to the specified project in order to be added to the new group.
Returns the created StudioProjectGroup object.
.. code-block:: python
added_project_group = client.create_project_group(
'project_name', ['[email protected]'], 'project_group_name'
)
Update Studio Project Group ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Assign or remove teammates from a project group.
Returns the updated StudioProjectGroup object.
.. code-block:: python
updated_project_group = client.update_project_group(
'project_name', 'project_group_name', ['emails_to_add'], ['emails_to_remove']
)
Studio Batches (For Scale Studio Only)
Get information about your pending Studio batches.
List Studio Batches ^^^^^^^^^^^^^^^^^^^
Returns a list of StudioBatch objects for all pending Studio batches.
.. code-block:: python
studio_batches = client.list_studio_batches()
Assign Studio Batches ^^^^^^^^^^^^^^^^^^^^^^
Sets labeler group assignment for the specified batch.
Returns a StudioBatch object for the specified batch.
.. code-block:: python
assigned_studio_batch = client.assign_studio_batches('batch_name', ['project_group_name'])
Set Studio Batches Priority ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sets the order to prioritize your pending Studio batches. You must include all pending studio batches in the List.
Returns a List of StudioBatch objects in the new order.
.. code-block:: python
studio_batch_priority = client.set_studio_batches_priorities(
['pending_batch_1', 'pending_batch_2', 'pending_batch_3']
)
Reset Studio Batches Priority ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Resets the order of your Studio batches to the default order, which prioritizes older batches first.
Returns a List of StudioBatch objects in the new order.
.. code-block:: python
reset_studio_batch_prioprity = client.reset_studio_batches_priorities()
Error handling
If something went wrong while making API calls, then exceptions will be raised automatically
as a ScaleException parent type and child exceptions:
-
ScaleInvalidRequest: 400 - Bad Request -- The request was unacceptable, often due to missing a required parameter. -
ScaleUnauthorized: 401 - Unauthorized -- No valid API key provided. -
ScaleNotEnabled: 402 - Not enabled -- Please contact [email protected] before creating this type of task. -
ScaleResourceNotFound: 404 - Not Found -- The requested resource doesn't exist. -
ScaleDuplicateResource: 409 - Conflict -- Object already exists with same name, idempotency key or unique_id. -
ScaleTooManyRequests: 429 - Too Many Requests -- Too many requests hit the API too quickly. -
ScaleInternalError: 500 - Internal Server Error -- We had a problem with our server. Try again later. -
ScaleServiceUnavailable: 503 - Server Timeout From Request Queueing -- Try again later. -
ScaleTimeoutError: 504 - Server Timeout Error -- Try again later.
Check out Scale's API documentation <https://docs.scale.com/reference#errors>_ for more details.
For example:
.. code-block:: python
from scaleapi.exceptions import ScaleException
try:
client.create_task(TaskType.TextCollection, attachment="Some parameters are missing.")
except ScaleException as err:
print(err.code) # 400
print(err.message) # Parameter is invalid, reason: "attachments" is required
Troubleshooting
If you notice any problems, please contact our support via Intercom by logging into your dashboard, or, if you are Enterprise, by contacting your Engagement Manager.
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