Using an integer to manipulate a string/text variable

[rexyboy2121]

Write a function that consumes a non-negative integer k and prints a k-size diamond. A k-size diamond consists of a top, a middle and a bottom. The middle is a single row of 2k+1 d’s. The top consists of k rows. The i throw in the top (starting from 0) contains 2i+1 d’s. The d’s on each top row are centred over the d’s on the middle row. A bottom is like a top but upside down.

Ex. k = 2;

d
ddd
ddddd
ddd
d

I have tried doing it in java, and want to do it in python. This is what I have so far in java:

int k;
int l;

void setup() {
size(400, 400);
k = 2;

textAlign(CENTER, CENTER);

String s = "d";
fill(255,0,0);
text(s + s + s + s +s, CENTER + 200, CENTER + 200);
}

[michael1789]

If each line is a string, it's possible to place spaces as required at the beginning of the string.