Duane Storey's iPhone-friendly random password generator in Python

gistfile1.txt

# Duane Storey wrote an iPhone-friendly random password in PHP.
# http://www.migratorynerd.com/tips/iphone-friendly-strong-password-generator/
# "Basically the idea is to only use mostly keys that are accessible without 
# having to hit shift or the keyboard button that switches to symbol mode."
# This is a port to Python if you wanted to wanted to generate it using something 
# like Pythonista for iOS. http://omz-software.com/pythonista/
 
import random
 
def generate_password(length = 10):
  # Enforce a minimum length of 10 symbols
  length = max(10, length)
  
  password = ''
  available_symbols = []
  
  # These only require one tap per symbol
  available_symbols.append('qwertyuiopasdfghjklzxcvbnm')
  
  # These require two taps per symbol
  available_symbols.append('QWERTYUIPASDFGHJKLZXCVBNM1234567890!?')
  
  # These require three taps per symbol
  available_symbols.append('[]{}#%^*+=_/|~<>?!')
  
  # Remove this next line if you only want mostly easy-to-type passwords
  password += available_symbols[2][ random.randint(0, len(available_symbols[2]) - 1) ]
  
  # These two require two keypresses each, but make the password much stronger
  password += available_symbols[1][ random.randint(0, len(available_symbols[1]) - 1) ]
  password += available_symbols[1][ random.randint(0, len(available_symbols[1]) - 1) ]
  
  for i in range(0, length - len(password)):
    password += available_symbols[0][ random.randint(0, len(available_symbols[0])) - 1 ]
  
  # http://www.php2python.com/wiki/function.str-shuffle/
  characters = list(password)
  random.shuffle(characters)
  return ''.join(characters)
 
if __name__ == '__main__':
  print generate_password()