Python script that generates a main diagonal character square

Question

I am trying to make a program that given a value, generates a "square" of n rows and n columns that has characters : in the main diagonal positions and the characters + in other positions.

For example, n = 5:

:++++
+:+++
++:++
+++:+
++++:

The logic is correct, however, I’m having trouble formatting the square. Can someone please help me?

n = 0
i = 0
j = 0

n = int(input("Digite um número: "))

if n > 0:
    print("Desenho")
    for i in range(1, n):
        for j in range(1, n):
            if i != j:
                print("+", end="")
            else:
                print(":", end="")
                print()
else:
    print("Numero menor ou igual a zero, programa abortado!")

Answer 1

The print() that makes the line break should be outside the else - in fact it must be outside the for internal also, as you should only change line after you have printed all of her characters.

In addition, a range does not include the final value, so range(1, n) goes from 1 to n - 1, ie the loop will make one iteration less. In this case, just omit the first parameter, doing only range(n), that the start will be zero:

n = int(input("Digite um número: "))
if n > 0:
    print("Desenho")
    for i in range(n):
        for j in range(n):
            if i != j:
                print("+", end="")
            else:
                print(":", end="")
        print() # fora do else, dentro do for externo 

Also note that you do not need to declare all variables at the beginning, assigning any value that will be dropped right away. Create them only when you need them.