import datetime
from flask import Blueprint


blueprint = Blueprint("filters", __name__, template_folder="templates")


@blueprint.app_template_filter()
def format_result(dttm):
    dttm = str(dttm).split(".")
    time = datetime.timedelta(seconds=int(dttm[0]))
    microtime = dttm[1][:3]
    return f"{time}:{microtime}"