On Saturday, February 2, 2019 at 6:47:49 PM UTC-6, Sayth Renshaw wrote:
> Hi
>
> I am trying to convert a switch statement from C into Python. (why?
> practising).
>
> This is the C code.
>
> printf("Dated this %d", day);
> switch (day) {
> case 1: case 21: case 31:
> printf("st"); break;
> case 2: case 22:
> printf("nd"); break;
> case 3: case 23:
> printf("rd"); break;
> default: printf("th"); break;
>
> }
> printf(" day of ");
>
> #Premise if the use enter an int as the date 21 for example it would print
> 21st. It appends the correct suffix onto a date.
>
> Reading and trying to implement a function that uses a dictionary. Not sure
> how to supply list into it to keep it brief and with default case of 'th'.
>
> This is my current code.
>
> def f(x):
> return {
> [1, 21, 31]: "st",
> [2, 22]: "nd",
> [3, 23]: "rd",
> }.get(x, "th")
>
>
> print(f(21))
>
> I have an unhashable type list. Whats the best way to go?
>
> Cheers
>
> Sayth
My best, readable attempt good for 1 - 99:
def sufx( day ):
if (day % 10) in [0,4,5,6,7,8,9] or (day / 10) == 1:
return 'th'
return {1: 'st', 2: 'nd', 3: 'rd'}[day % 10]
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