from datetime import datetime as dt

def format_date(dt_, fmt = "%m/%d/%Y, %H:%M:%S"):
    return dt_.strftime(fmt)

def now(fmt = "%m/%d/%Y, %H:%M:%S"):
    return format_date(dt.now(), fmt)

def remove_class(element, className):
    element.element.classList.remove("line-through")

def add_class(element, className):
    element.element.classList.add("line-through")