code: def profile(cls, fn):
      if cls.name is None:
          raise ValueError(
              "Need to call Profile.init(<suitename>, <default_num>) first."
          )
      cls.tests.append(fn)
      return fn
  
imports: import argparse
  import cProfile
  import gc
  import os
  import pstats
  import re
  import sys
  import time
label_desc: Use image node_id 3 for calling the Profiler obj's underlying member method code with example usage: obj.profile(cls, fn) and returns: fn