old_contents: from utility import *
  import timeintegrator  # NOQA
  import solver  # NOQA
  import solver2d  # NOQA
  
  op2.init(log_level=WARNING)  # DEBUG, INFO, WARNING, ERROR, CRITICAL
  parameters['assembly_cache']['enabled'] = False
  parameters['coffee'] = {}
  parameters['matnest'] = False
  
new_contents: from utility import *
  import timeintegrator  # NOQA
  import solver  # NOQA
  import solver2d  # NOQA
  
  op2.init(log_level=WARNING)  # DEBUG, INFO, WARNING, ERROR, CRITICAL
  parameters['assembly_cache']['enabled'] = False
  
subject: enable coffee and matnest