Python secure password generation function

pass_gen.py

def pass_gen(length=12):
    """Generates a random password of the length specified. Also
    makes sure that mimimum complexity requirements are met.
    This generates very strong passwords.

    EX: pass_gen(12)
    makes a 12 char password that will have at least 1 special, 1
    number, and 1 lower case letter. If no length is specified, 
    12 is default length.
    """
    options = 'ABCDEFGHIJKLMNPQRSTUVWXY' \
              'abcdefghijkmnopqrstuvwyz' \
              '23456789' \
              '$!#@%&+'
    s = ''
    try:
        for i in range(0, length):
            s += random.choice(options)
        # ensure that minimum password complexity is met
        if any(c in '$!#@%&+' for c in s) and \
           any(c in '23456789' for c in s) and \
           any(c in 'abcdefghijkmnopqrstuvwyz' for c in s):
            return s
        else:
            # if complexity not met, run again
            return pass_gen(length)
    except(ValueError, TypeError):
        return str(length)