new_contents: # Begin: Python 2/3 compatibility header small
  # Get Python 3 functionality:
  from __future__ import\
      absolute_import, print_function, division, unicode_literals
  from future.utils import raise_with_traceback, raise_from
  # catch exception with: except Exception as e
  from builtins import range, map, zip, filter
  from io import open
  import six
  # End: Python 2/3 compatability header small
  
  
  import numpy as np
  
  
  def save_parameters(filename, l):
      f = np.savez(filename, *l)
      pass
  
  
  def load_parameters(filename):
      f = np.load(filename)
      ret = [f["arr_%i" % i] for i in range(len(f.keys()))]
      return ret
  
  
  def store_patterns(filename, p):
      d = {}
      for prefix in ["A", "r", "mu"]:
          if prefix in p:
              d.update({"%s_%i" % (prefix, i): x
                        for i, x in enumerate(p[prefix])})
      np.savez(filename, **d)
      pass
  
  
  def load_patterns(filename):
      f = np.load(filename)
      ret = {}
      for prefix in ["A", "r", "mu"]:
          l = sum([x.startswith(prefix) for x in f.keys()])
          ret.update({prefix: [f["%s_%i" % (prefix, i)] for i in range(l)]})
      return ret
  
subject: Add simple interface to store parameters and patterns across python 2 and 3.