code: def isint(x):
      """
      Check if argument is int
      """
      try:
          a = float(x)
          b = int(a)
      except ValueError:
          return False
      else:
          return a == b
  
imports: import sys, os, numpy
label_desc: Use image node_id 2 for calling a global function with example usage: isint(x) and returns: unknown, False