Client

import labelbox as lb
client = lb.Client(api_key="<YOUR_API_KEY>")

Fundamentals

Get a batch

Batches are accessible via an object of the Project class.

# get a project
project = client.get_project("<project_id>")

# get the batches (returns a paginated collection of Batch objects)
batches = project.batches()

# get one batch
batch = next(batches)

# inspect all batches
for batch in batches:
  print(batch)
    
# for ease of use, you can convert the paginated collection to a list
list(batches)

Create a batch

When creating a batch to send to a project, one of either global_keys or data_rows must be supplied as an argument. If using the data_rows argument, you can supply either a list of data row IDs or a list of DataRow class objects.

Optionally, you can supply a priority, ranging from 1 (highest) to 5 (lowest), for which the batch should be labeled. This will determine the order in which the included data rows appear in the labeling queue compared to other batches. If no value is provided, the batch will assume the lowest priority.

project.create_batch(
  name="<unique_batch_name>",
  global_keys=["key1", "key2", "key3"],
  priority=5,
)

# if the project uses consensus, you can optionally supply a dictionary with consensus settings
# if provided, the batch will use consensus with the specificed coverage and votes
project.create_batch(
  name="<unique_batch_name>",
  data_rows=["<data_row_id>", "<data_row_id>"],
  priority=1,
  consensus_settings={"number_of_labels": 3, "coverage_percentage": 0.1}
)

Methods

Export the data rows

This method returns a generator that produces all data rows currently in the batch.

data_rows = batch.export_data_rows(include_metadata=False)

# inspect the data rows
for data_row in data_rows:
  print(data_row)

Remove queued data rows

This method removes queued data rows from the batch and consequently the labeling queue of the project.

batch.remove_queued_data_rows()

Delete the labels

This method deletes the labels made on data rows in the batch and re-queues the data rows for labeling.

batch.delete_labels()
  
# alternatively, you can re-queue the data with labels as templates
batch.delete_labels(set_labels_as_template=True)

Delete a batch

If any labels exist that were created on data rows in the batch, the batch cannot be deleted. You need to first delete the labels made on data rows in the batch, as shown above, before deleting the batch itself.

batch.delete()

Attributes

Get the basics

# name (str)
batch.name

# created at (datetime)
batch.created_at

# updated at (datetime)
batch.updated_at

# size, the number of data rows in the batch (int)
batch.size

# project (relationship to Project object)
project = batch.project()