text: import importlib
  import traceback
  from grading.util import roster, print_table
  from csp import backtracking_search, lcv, mrv, mac
  
  def try_csps(csps):
      for c in csps:
          assignment = backtracking_search(
              **c
              # order_domain_values=lcv,
              # select_unassigned_variable=mrv,
              # inference=mac
          )
          print(assignment)
  
  submissions = {}
  scores = {}
  
  message1 = 'Submissions that compile:'
  for student in roster:
      try:
          # http://stackoverflow.com/a/17136796/2619926
          mod = importlib.import_module('submissions.' + student + '.myCSPs')
          submissions[student] = mod.myCSPs
          message1 += ' ' + student
      except ImportError:
          pass
      except:
          traceback.print_exc()
  
  print(message1)
  print('----------------------------------------')
  
  for student in roster:
      if not student in submissions.keys():
          continue
      scores[student] = []
      try:
          csps = submissions[student]
          print('CSPs from:', student)
          try_csps(csps)
      except:
          traceback.print_exc()
  
      print(student + ' scores ' + str(scores[student]) + ' = ' + str(sum(scores[student])))
      print('----------------------------------------')