code: def imap_unordered(fn, data, num_workers, batch_size=1):
      return ParApply(
          lift(fn), partition(data, num_workers), batch_size=batch_size
      )
  
imports: from ._partition import partition, divide_into
  from .parallel import ParApply
  from .sequential import Apply
  from .pipeline import Pipeline
  from .util import lift, Map
label_desc: Use image node_id 1 for calling a global function with example usage: imap_unordered(fn, data, num_workers, batch_size) and returns: ParApply