Question

I’m creating a function that receives the tenths of second (t) and returns a processed string (digital clock like).

Is there a better/easier/optimum way to do it?

Output format: A:BC.D (Minutes : Seconds . Tenths)

def format(t):
    A = 0
    B = 0
    C = 0
    D = t

    if t >= 10:
        C = t // 10
        D = t % 10

        if C >= 10:
            B = C // 10
            C = C % 10

            if B >= 6:
                A = B // 6
                B = B % 6

    return str(A) + ":" + str(B) + str(C) + "." + str(D)

Answer 1

All those ifs are completely unnecessary, and a few other things can be simplified:

def fmt(t):
    tenths = t % 10
    t //= 10
    sec = t % 60
    t //= 60
    min = t
    return '%d:%02d.%d' % (min, sec, tenths)

print(fmt(1234))