Create Alfred Workflow

# -*- coding:utf-8 -*-

import sys
from os import urandom
from random import choice
from workflow import Workflow, web

reload(sys)
sys.setdefaultencoding('utf-8')

char_set = {
            'small': 'abcdefghijklmnopqrstuvwxyz',
            'nums': '0123456789',
            'big': 'ABCDEFGHIJKLMNOPQRSTUVWXYZ',
            'special': '^!\$%&/()=?{[]}+~#-_.:,;<>|\\'
            }

def generate_pass(length=21):
    """Function to generate a password"""
    password = []
    while len(password) < length:
        key = choice(char_set.keys())
        a_char = urandom(1)
        if a_char in char_set[key]:
            if check_prev_char(password, char_set[key]):
                continue
            else:
                password.append(a_char)
    return ''.join(password)

def check_prev_char(password, current_char_set):
    """Function to ensure that there are no consecutive
    UPPERCASE/lowercase/numbers/special-characters."""
    index = len(password)
    if index == 0:
        return False
    else:
        prev_char = password[index - 1]
        if prev_char in current_char_set:
            return True
        else:
            return False

def main(wf):
    for n in range(6):
        x = 2 * n + 6
        p = generate_pass(x)
        arg = '$%'.join([p])
        wf.add_item(
            title=p,
            subtitle='length:' + str(x),
            valid=True,
            arg=arg)
    wf.send_feedback()
if __name__ == '__main__':
    wf = Workflow()
    sys.exit(wf.run(main))