Mistake procedure or args

from threading import Thread

#...

thread = []

thread.append(Thread(target=sub_folder, args=(folder="c:\\downloads\\new\\", files_template=re.compile(r""+myconfig["nomp4"]), isBarrier=True, )))
"""
    thread.append(Thread(target=sub_folder, args=(folder="c:\\downloads\\new\\", files_template=re.compile(r""+myconfig["nomp4"]), isBarrier=True, )))
                                                        ^
SyntaxError: invalid syntax
"""