code: def clear_all_placeholder_variables(printable=True):
      
      tl.logging.info('clear all .....................................')
      gl = globals().copy()
      for var in gl:
          if var[0] == '_': continue
          if 'func' in str(globals()[var]): continue
          if 'module' in str(globals()[var]): continue
          if 'class' in str(globals()[var]): continue
  
          if printable:
              tl.logging.info(" clear_all ------- %s" % str(globals()[var]))
  
          del globals()[var]
docs: Clears all the placeholder variables of keep prob,
      including keeping probabilities of all dropout, denoising, dropconnect etc.
  
      Parameters
      ----------
      printable : boolean
          If True, print all deleted variables.