add all keys in a directory to pageant

pageant.py

import csv
import os
import subprocess
import time

KEYDIR = os.path.dirname(os.path.abspath(__file__))
PAGEANT_EXE = 'C:/tools/putty/pageant.exe'

def running_processes():
    s = subprocess.check_output(['tasklist.exe', '/fo', 'csv']).decode('cp437')
    lines = s.splitlines()
    return csv.reader(lines)

def is_pageant_running():
    for process in running_processes():
        if process[0].lower().find('pageant') >= 0:
            return True
    return False

def start_pageant():
    if not is_pageant_running():
        subprocess.Popen([PAGEANT_EXE])
        time.sleep(0.5)

def add_key(key):
    subprocess.call([PAGEANT_EXE, key])

if __name__ == '__main__':
    start_pageant()

    for filename in os.listdir(KEYDIR):
        filepath = os.path.join(KEYDIR, filename)

        if not os.path.isfile(filepath):
            continue

        if os.path.splitext(filepath)[1] != '.ppk':
            continue

        add_key(filepath)

pageant_automagic.cmd

@echo off
:: put this script in your Startup directory
python D:\keys\pageant.py