code: def unload():
      to_pop = []
      for mod in sys.modules:
          if mod.startswith("perspective"):
              to_pop.append(mod)
      for mod in to_pop:
          sys.modules.pop(mod)
  
imports: import os
  import pytest
  import sys
  import numpy
  import pandas
  from datetime import date, datetime
  from functools import partial
  from types import MethodType
label_desc: Use image node_id 2 for calling a global function with example usage: unload() without return types