the best function

key64gen.py

class StringKeyGenerator(object):
    def __init__(self, len=64):
        self.lenght = len
    def __call__(self):
        return ''.join(random.choice(string.ascii_letters + string.digits) for x in range(self.lenght))
    def salt(self):
        return ''.join(random.choice(string.ascii_uppercase) for x in range(self.lenght))