tasks = check_output(['tasklist']).decode('cp866', 'ignore').split("rn")
p = []
for task in tasks:
    m = re.match(b'(.*?)\s+(\d+)\s+(\w+)\s+(\w+)\s+(.*?)\s.*', task.encode())
    if m is not None:
        p.append(m.group(1).decode())
print(p)