pourquoi le code du compteur ajoute-t-il une ligne supplémentaire à chaque comptage ?

Question

Qu'est-ce qui ne va pas avec ce code il ajoute une ligne supplémentaire à chaque fois qu'il compte vers le haut ou vers le bas comment puis-je empêcher cela et pourquoi cela se produit-il ?

def counter(start, stop):
    x = start
    if start > stop:
        return_string = "Counting down: "
        while x >= stop:
            return_string += str(x)
            x = x-1 
            if start != stop:
                return_string += ","
            print(return_string)
    else:
        return_string = "Counting up: "
        while x <= stop:
            return_string += str(x)
            x = x + 1 
            if start != stop:
                return_string += ","
            print(return_string)
    return return_string

print(counter(1, 10)) # Should be "Counting up: 1,2,3,4,5,6,7,8,9,10"
print(counter(2, 1)) # Should be "Counting down: 2,1"
print(counter(5, 5)) # Should be "Counting up: 5"

Answer 1

Vous pouvez utiliser ce code ici. Cela imprimera les résultats sans les virgules de fin.

def counter(start, stop):
x = start
if x > stop:
    return_string = "Counting down: "
    while x >= stop:
        return_string += str(x)
        x = x-1
        if start != stop:
            return_string += ","
            return_string.rstrip(',')
else:
    return_string = "Counting up: "
    while x <= stop:
        return_string += str(x)
        x = x + 1
        if start != stop:
            return_string += ","
return return_string.rstrip(',')

Answer 2

def counter(start, stop):
x = start
if start > stop:
    return_string = "Counting down: "
    while x >= stop:
        return_string += str(x)
        if x != stop :
            return_string += ","
        x -= 1
else:
    return_string = "Counting up: "
    while x <= stop:
        return_string += str(x)
        if x != stop:
            return_string += ","
        x += 1
return return_string

print(counter(1, 10)) # Should be "Counting up: 1,2,3,4,5,6,7,8,9,10"
print(counter(2, 1)) # Should be "Counting down: 2,1"
print(counter(5, 5)) # Should be "Counting up: 5"