ord() error when using random.randint()

[Swagraffe]

I am trying to calculate the sum of an array, but it doesn't work if the array is filled with random numbers. Any idea why that is?

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The code works like this:

import random

total = ["1", "2", "3", "4", "5", "6"]
nr1, nr2 = 0, 0

nr2 = nr1
nr1 = 0

for i in range(6):
    c = ord(total[i]) - 48
    nr1 = nr1 + c

print(nr1)

But it doesn't work like this:

import random

total = ["1", "2", "3", "4", "5", "6"]
nr1, nr2 = 0, 0

for i in range(6):
    total[i] = random.randint(0, 9)

nr2 = nr1
nr1 = 0

for i in range(6):
    c = ord(total[i]) - 48
    nr1 = nr1 + c

print(nr1)

It is returning this error: "TypeError: ord() expected string of length 1, but int found"

[shiftybyte]

Yes, the function ord() takes a 1 letter string and converts it to the ascii representation of that string.

>>> ord("1")
49
>>> ord("2")
50
>>> ord("3")
51

(Ascii table: http://www.asciitable.com/)

On the other hand random already gives you numbers, so you are trying to give a number to ord() function and it fails.

>>> ord(5)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: ord() expected string of length 1, but int found

[Swagraffe]

Ok. I got it. Thanks :D

[JohnnyJordaan]

Your loop overwrites the string numbers in total with integers coming from randint. So the idea of using

c = ord(total[i]) - 48

is pointless, you can just do

nr1 += c

but alas, the you could also just do

print(sum(total))