code: def set_core_number(num):
      callZooFunc("float", "setCoreNumber", num)
  
imports: from bigdl.util.common import Sample, JTensor, JavaCreator, _get_gateway, _py2java, _java2py
  import numpy
  import os
  import tempfile
  import uuid
  import functools
  from urllib.parse import urlparse
label_desc: Use image node_id 11 for calling a global function with example usage: set_core_number(num) without return types