I need to optimize a program that goes through numbers [closed]

Question

My goal is to create a program that takes numbers from 1 to 100, if a number can be divided by 3, it gives Jack, if divided by 5 Pot, and if a number can be divided by both 3 and 5 it gives JackPot The below code works, but I was told it can be optimized but I do not see how

a = 0
    while a < 100:
        list = []
        a = a + 1
        if a % 3 == 0:
            list.append("Jack")
        if a % 5 == 0:
            list.append("Pot")
        elif a % 3 and a % 5 == 0:
            print("JackPot")
    
        if list != []:
            print(*list)
        else:
            print(a)

Answer 1

Your big error is thinking that the elif is meaningful. Note that a % 3 and a % 5 == 0 means (a % 3 != 0) and (a % 5 == 0) which is probably not what you want. In any case you cannot reach here unless (a % 5 == 0) is false so the elif branch will never be taken. (You also print "Jack Pot" instead of "JackPot").

I can see a couple of minor tweaks, that may make the code marginally faster. As this run time of this code is heavily dominated by the i/o this does not matter.

Remember the rule of code optimisation: Don't do it. There is also a rule for experts: Don't do it yet.