code: def call(cmd):
      print(f"Executing: {cmd}")
      check_call(cmd, shell=True)
  
imports: import itertools
  import os
  import csv
  from collections import defaultdict
  from six.moves import zip
  import io
  import wget
  import sys
  from subprocess import check_call, check_output
label_desc: Use image node_id 1 for calling a global function with example usage: call(cmd) without return types