Is it possible to set a parameter in the def function that may or may not exist?

Question

JavaScript

There is, for example
, def send(test, tost):
is it possible to make the 2nd parameter as well as specify and do without it?

Answer 1

jquery-ui connected?
On $('#date_to_vis').datepicker(...) does not give an error, most likely because it does not reach this line, crashes with an error earlier.

Answer 2

def send(test, tost=None):
    if tost is None:
        # Выполняем какие-то действия если был указан только первый аргумент
    else:
        # Выполняем какие-то действия, если были указаны оба аргумента