text: import data
  from model.group import Group
  import random
  import string
  import os.path
  import jsonpickle
  import sys
  import getopt
  
  
  try:
        opts, args = getopt.getopt(sys.argv[1:], "n:f:", ["number of groups", "file"])
  except getopt.GetoptError as err:
        getopt.usage()
        sys.exit(2)
  
  n = 5
  f = "data/groups.json"
  
  for o, a in opts:
      if o == "-n":
          n = int(a)
      elif o == "-f":
          f = a
  
  def random_string(prefix,maxlen):
      symbols = string.ascii_letters + string.digits + string.punctuation + " "*10
      return prefix + "".join([random.choice(symbols) for i in range(random.randrange(maxlen))])
  
  
  testdata = [Group(name="", header="", footer="")] + [
      Group(name=random_string("name", 10), header=random_string("header", 20), footer=random_string("footer", 20))
      for i in range(n)
  ]
  
  
  file = os.path.join(os.path.dirname(os.path.abspath(__file__)), "..", f)
  
  with open (file, "w") as out:
      out.write(jsonpickle.encode(testdata, indent=2))
  