code: def number_check(num):
      if str(num).isdigit():
          return True
  
      else:
          log.error("[NUMBER_CHECK] Number(%s) is not a numbers." % num)
          return False
  
file_path: milvus/tests/python_client/check/param_check.py
imports: import sys
  import operator
  from common import common_type
  from utils.util_log import test_log
label_desc: Use image node_id 2 for calling a global function with example usage: number_check(num) and returns: True, False