Python countdown function with input parameter

Question

I have the following code to show a countdown in a given label in my GUI.

The code looks like this:

def countdown(self, a, remaining = None):
    if remaining is not None:
        self.remaining = remaining

    if self.remaining <= 0:
        a.configure(text="time's up!")
    else:
        a.configure(text="%d" % self.remaining)
        self.remaining = self.remaining - 1
        self.after(1000, self.countdown)

"a" is at the moment a placeholder variable for my label I will input in this function. My problem is that I don’t know how to remain "a" while reusing my function with:

self.after(1000, self.countdown)

Thanks in advance!

Asked By: K-Doe

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Source

Answer 1

As per tkinter doc, signature of after is:

after(delay_ms, callback=None, *args)

So you can pass “a” or “remaining” as arguments and collect it in the positional argument container *args and use them inside your function. By this way, your function remains generic.

Answered By: dpattayath

Python countdown function with input parameter

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