passgen.py

import random

def generatePassword(length):
  def bigSample(orig, ln):
    ls = []
    while ln - len(ls) > len(orig):
      ls = ls + orig
      random.shuffle(ls)
    return ls + random.sample(orig, ln - len(ls))
  vowels = bigSample(list("aeuio"), length // 2 + 1)
  consonants = bigSample(list("bcdfghjklmnpqrstvwxz") + ["th", "sh"], length // 2 + 1)
  s = ""
  for i in range(length // 2 + 1):
    s += vowels[i] + consonants[i]
  return s[:length]