code: def get(
      dsk: dict,
      out: Sequence[str],
      cache: dict = None,
      sortkeys: List[str] = None,
  ):
      """Get value from the task graphs.
  
      Parameters
      ----------
      dsk
          task graph dict
      out
          sequence of output keys which should be retrieved as results of running
          `get()` over the `dsk`.
      cache
          cache dict for fast in-memory lookups of previously computed results.
      sortkeys
          topologically sorted keys
  
      Examples
      --------
      >>> from flash.core.serve.dag.utils_test import inc
      >>> d = {'x': 1, 'y': (inc, 'x')}
      >>> get(d, 'x')
      1
      >>> get(d, 'y')
      2
      >>> get(d, 'y', sortkeys=['x', 'y'])
      2
  
      """
      for k in flatten(out) if isinstance(out, list) else [out]:
          if k not in dsk:
              raise KeyError(f"{k} is not a key in the graph")
      if cache is None:
          cache = {}
      if sortkeys is None:
          sortkeys = toposort(dsk)
      for key in sortkeys:
          task = dsk[key]
          result = _execute_task(task, cache)
          cache[key] = result
      result = _execute_task(out, cache)
      if isinstance(out, list):
          result = lists_to_tuples(result, out)
      return result
  
imports: from collections import defaultdict
  from typing import List, Sequence
  from flash.core.utilities.imports import _TOPIC_SERVE_AVAILABLE
label_desc: Use image node_id 6 for calling a global function with example usage: get(dsk, out, cache, sortkeys) and returns: result