code: def pre_run_cell():
      """Capture current time before we execute the current command"""
      global t1
      t1 = time.time()
  
file_path: recommenders/recommenders/utils/notebook_memory_management.py
imports: from __future__ import division
  from __future__ import absolute_import
  from __future__ import print_function
  from __future__ import unicode_literals
  import time
  import memory_profiler
  from IPython import get_ipython
  import psutil
  import warnings
label_desc: Use image node_id 4 for calling a global function with example usage: pre_run_cell() without return types