class_docstr: A namespace for checkpoints so that they can be accessed via dot notation.
class_docstr_tok: ["A","namespace","for","checkpoints","so","that","they","can","be","accessed","via","dot","notation","."]
code: def __init__(self):
      self.future_output = None
      self.created_output = None
  
file_path: snakemake/snakemake/checkpoints.py
imports: from snakemake.common import async_run
  from snakemake.exceptions import IncompleteCheckpointException, WorkflowError
  from snakemake.io import checkpoint_target
label_desc: Use image node_id 1 to create a new Checkpoints object  with example: obj = Checkpoints()