Skip to main content

​
class Run

A single run associated with an entity and project.

​
method Run.__init__

__init__(
    client: 'RetryingClient',
    entity: 'str',
    project: 'str',
    run_id: 'str',
    attrs: 'Mapping | None' = None,
    include_sweeps: 'bool' = True
)
Args:
  • client: The W&B API client.
  • entity: The entity associated with the run.
  • project: The project associated with the run.
  • run_id: The unique identifier for the run.
  • attrs: The attributes of the run.
  • include_sweeps: Whether to include sweeps in the run.
Attributes:
  • tags ([str]): a list of tags associated with the run
  • url (str): the url of this run
  • id (str): unique identifier for the run (defaults to eight characters)
  • name (str): the name of the run
  • state (str): one of: running, finished, crashed, killed, preempting, preempted
  • config (dict): a dict of hyperparameters associated with the run
  • created_at (str): ISO timestamp when the run was started
  • system_metrics (dict): the latest system metrics recorded for the run
  • summary (dict): A mutable dict-like property that holds the current summary. Calling update will persist any changes.
  • project (str): the project associated with the run
  • entity (str): the name of the entity associated with the run
  • project_internal_id (int): the internal id of the project
  • user (str): the name of the user who created the run
  • path (str): Unique identifier [entity]/[project]/[run_id]
  • notes (str): Notes about the run
  • read_only (boolean): Whether the run is editable
  • history_keys (str): Keys of the history metrics that have been logged with wandb.log({key: value})
  • metadata (str): Metadata about the run from wandb-metadata.json
Initialize a Run object. Run is always initialized by calling api.runs() where api is an instance of wandb.Api.

​
property Run.entity

The entity associated with the run.

​
property Run.id

The unique identifier for the run.

​
property Run.lastHistoryStep

Returns the last step logged in the run’s history.

​
property Run.metadata

Metadata about the run from wandb-metadata.json. Metadata includes the run’s description, tags, start time, memory usage and more.

​
property Run.name

The name of the run.

​
property Run.path

The path of the run. The path is a list containing the entity, project, and run_id.

​
property Run.state

The state of the run. Can be one of: Finished, Failed, Crashed, or Running.

​
property Run.storage_id

The unique storage identifier for the run.

​
property Run.summary

A mutable dict-like property that holds summary values associated with the run.

​
property Run.url

The URL of the run. The run URL is generated from the entity, project, and run_id. For SaaS users, it takes the form of https://wandb.ai/entity/project/run_id.

​
property Run.username

This API is deprecated. Use entity instead.

​
classmethod Run.create

create(
    api: 'public.Api',
    run_id: 'str | None' = None,
    project: 'str | None' = None,
    entity: 'str | None' = None,
    state: "Literal['running', 'pending']" = 'running'
)
Create a run for the given project.

​
method Run.delete

delete(delete_artifacts=False)
Delete the given run from the wandb backend. Args:
  • delete_artifacts (bool, optional): Whether to delete the artifacts associated with the run.

​
method Run.file

file(name)
Return the path of a file with a given name in the artifact. Args:
  • name (str): name of requested file.
Returns: A File matching the name argument.

​
method Run.files

files(
    names: 'list[str] | None' = None,
    pattern: 'str | None' = None,
    per_page: 'int' = 50
)
Returns a Files object for all files in the run which match the given criteria. You can specify a list of exact file names to match, or a pattern to match against. If both are provided, the pattern will be ignored. Args:
  • names (list): names of the requested files, if empty returns all files
  • pattern (str, optional): Pattern to match when returning files from W&B. This pattern uses mySQL’s LIKE syntax, so matching all files that end with .json would be “%.json”. If both names and pattern are provided, a ValueError will be raised.
  • per_page (int): number of results per page.
Returns: A Files object, which is an iterator over File objects.

​
method Run.history

history(samples=500, keys=None, x_axis='_step', pandas=True, stream='default')
Return sampled history metrics for a run. This is simpler and faster if you are ok with the history records being sampled. Args:
  • samples : (int, optional) The number of samples to return
  • pandas : (bool, optional) Return a pandas dataframe
  • keys : (list, optional) Only return metrics for specific keys
  • x_axis : (str, optional) Use this metric as the xAxis defaults to _step
  • stream : (str, optional) “default” for metrics, “system” for machine metrics
Returns:
  • pandas.DataFrame: If pandas=True returns a pandas.DataFrame of history metrics.
  • list of dicts: If pandas=False returns a list of dicts of history metrics.

​
method Run.load

load(force=False)

​
method Run.log_artifact

log_artifact(
    artifact: 'wandb.Artifact',
    aliases: 'Collection[str] | None' = None,
    tags: 'Collection[str] | None' = None
)
Declare an artifact as output of a run. Args:
  • artifact (Artifact): An artifact returned from wandb.Api().artifact(name).
  • aliases (list, optional): Aliases to apply to this artifact.
  • tags: (list, optional) Tags to apply to this artifact, if any.
Returns: A Artifact object.

​
method Run.logged_artifacts

logged_artifacts(per_page: 'int' = 100) → public.RunArtifacts
Fetches all artifacts logged by this run. Retrieves all output artifacts that were logged during the run. Returns a paginated result that can be iterated over or collected into a single list. Args:
  • per_page: Number of artifacts to fetch per API request.
Returns: An iterable collection of all Artifact objects logged as outputs during this run. Example: 
import wandb
import tempfile

with tempfile.NamedTemporaryFile(mode="w", delete=False, suffix=".txt") as tmp:
   tmp.write("This is a test artifact")
   tmp_path = tmp.name
run = wandb.init(project="artifact-example")
artifact = wandb.Artifact("test_artifact", type="dataset")
artifact.add_file(tmp_path)
run.log_artifact(artifact)
run.finish()

api = wandb.Api()

finished_run = api.run(f"{run.entity}/{run.project}/{run.id}")

for logged_artifact in finished_run.logged_artifacts():
   print(logged_artifact.name)

​
method Run.save

save()
Persist changes to the run object to the W&B backend.

​
method Run.scan_history

scan_history(keys=None, page_size=1000, min_step=None, max_step=None)
Returns an iterable collection of all history records for a run. Args:
  • keys ([str], optional): only fetch these keys, and only fetch rows that have all of keys defined.
  • page_size (int, optional): size of pages to fetch from the api.
  • min_step (int, optional): the minimum number of pages to scan at a time.
  • max_step (int, optional): the maximum number of pages to scan at a time.
Returns: An iterable collection over history records (dict). Example: Export all the loss values for an example run 
run = api.run("entity/project-name/run-id")
history = run.scan_history(keys=["Loss"])
losses = [row["Loss"] for row in history]

​
method Run.to_html

to_html(height=420, hidden=False)
Generate HTML containing an iframe displaying this run.

​
method Run.update

update()
Persist changes to the run object to the wandb backend.

​
method Run.upload_file

upload_file(path, root='.')
Upload a local file to W&B, associating it with this run. Args:
  • path (str): Path to the file to upload. Can be absolute or relative.
  • root (str): The root path to save the file relative to. For example, if you want to have the file saved in the run as “my_dir/file.txt” and you’re currently in “my_dir” you would set root to ”../”. Defaults to current directory (”.”).
Returns: A File object representing the uploaded file.

​
method Run.use_artifact

use_artifact(artifact, use_as=None)
Declare an artifact as an input to a run. Args:
  • artifact (Artifact): An artifact returned from wandb.Api().artifact(name)
  • use_as (string, optional): A string identifying how the artifact is used in the script. Used to easily differentiate artifacts used in a run, when using the beta wandb launch feature’s artifact swapping functionality.
Returns: An Artifact object.

​
method Run.used_artifacts

used_artifacts(per_page: 'int' = 100) → public.RunArtifacts
Fetches artifacts explicitly used by this run. Retrieves only the input artifacts that were explicitly declared as used during the run, typically via run.use_artifact(). Returns a paginated result that can be iterated over or collected into a single list. Args:
  • per_page: Number of artifacts to fetch per API request.
Returns: An iterable collection of Artifact objects explicitly used as inputs in this run. Example: 
import wandb

run = wandb.init(project="artifact-example")
run.use_artifact("test_artifact:latest")
run.finish()

api = wandb.Api()
finished_run = api.run(f"{run.entity}/{run.project}/{run.id}")
for used_artifact in finished_run.used_artifacts():
   print(used_artifact.name)
test_artifact

​
method Run.wait_until_finished

wait_until_finished()
Check the state of the run until it is finished.
⌘I