Decimal to Octal

def DecimalOctal(num):
    octal = [0] * 100
    # counter for octal number array
    i = 0
    while (num != 0):
        # store remainder in octal array
        octal[i] = num % 8
        num = int(num / 8)
        i += 1
    # print octal number array in reverse order
    for j in range(i - 1, -1, -1):
        print(octal[j], end='')
# take inputs
num = int(input('Enter a decimal number: '))
# calling function and display result
print('Octal value: ', end='')
DecimalOctal(num)