code: def execute(command):
      """Execute a command and return the decoded stdout."""
      out = subprocess.check_output(command.split())
      return out.decode("utf-8")
  
imports: import os
  import shutil
  import subprocess
  import pytest
  from pymongo import MongoClient
  import orion.core.cli
  import orion.core.io.experiment_builder
  from orion.client import create_experiment
  from orion.core.io.database import database_factory
  from orion.storage.base import storage_factory
label_desc: Use image node_id 7 for calling a global function with example usage: execute(command) and returns: out