calculation with list in list

[gianniskampanakis]

hello. with this code i can calculate 1 + 2 + 3 = 6

l = [1,2,3,]
def suml(l):
  s= 0
  for i in l:
    s = s + i
  return s  

but what can i do if i want to calculate this list ( 1 + 2 +3 +( 1 + 2) = 9)

l = [1,2,3,[1,2]]

[ndc85430]

What have you thought about, or tried?

[gianniskampanakis]

Somehow I have to use the def inside the def but I cant solve it . Or call the def repeatedly

[wavic]

You can try to flatten the nested lists first. There is a topic here about that.

[gianniskampanakis]

Well I need the code to work for both lists. It has to calculate every list that you can give .

[Yoriz]

Somehow I have to use the def inside the def but I cant solve it . Or call the def repeatedly

Do you have to use Recursion ?

[gianniskampanakis]

No recursion is not needed. I study this exercise in order to give exams at university. Theoretically we have not learn yet recursion

---

The help note says: Write a sumL function that will calculate the sum of the elements of a list of numbers and call this function repeatedly.]

[cvsae]

Γεια σου γιαννη

l = [1,2,3,[1,2]]

def suml(l, s=0):
    for i in l:
        if type(i) == int:
            s +=i 
        else:
            return suml(i, s)
    return s

l = [1,2,3,[1,2]]

def suml(l):
    s = 0 
    for i in l:
        if type(i) == int:
            s +=i 
        else:
            for t in i:
                s +=t      
    return s

[wavic]

This looks like recursion

[gianniskampanakis]

Σε ευχαριστώ το type(i) εκτός από int τι τιμες μπορεί να πάρει στην περίπτωση μας ;