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Docs/ API Reference/ Context/ cancelled

Context· property

StepContext.cancelled

true once cancellation is requested for this run

Python

cancelled: bool

Returns bool — True once the user requested cancellation of this run

Example#

Python

@tool.shape
def heavy(t: Table, ctx: StepContext) -> Table:
    for chunk in chunks(t):
        if ctx.cancelled:
            return t          # stop early, cleanly
        ...
    return t

Notes#

Read-only. Poll it inside long loops — nothing interrupts your function for you. Returning early on cancel leaves whatever partial work you have done, so return a safe value.

Example#

Notes#

See also#