Correspondence of values

[William049]

Hello I'm new:), I'm on the realisation of a family tree project, it is 95% complete (approximately 200 lines) But I can't do something that I think is simple.

I currently have a function that has the end of its process returns to me a table of this form, which may be longer in some cases but the syntax is the same:

[0, 1]

I have a list of people that is built as the user's choices of the form grow:

liste = [[' NAME1',' SURNAME1'],[' NAME2',' SURNAME2'],[' NAME3',' SURNAME3']]

I would like from the value table[0,1], it returns to me the first name of the corresponding person in the list of persons SURNAME

The function who return me the table of value is it:

def descendants(num3):
    descendants = []
    for i in range(len(listeparentes)):
        if (num3 == listeparentes[i][0]):
            descendants.append(listeparentes[i][1])
    return (descendants)

For example, with the values listed in the table, the program must return me

SURNAME1
SURNAME2

I was thinking about something like that.. but that's not correct..

def ValueToSurname(name):
	name = []
	for i in descendants:
		name.append(liste[i][1])
	return (name)

Thanks if you could help me :)

[Gribouillis]

If you want the lists of surnames, you can do

liste = [[' NAME1',' SURNAME1'],[' NAME2',' SURNAME2'],[' NAME3',' SURNAME3']]
surnames = [t[1] for t in liste]

[William049]

Thanks for the answer but that not respond at what i need.
There is not table of value so...

I would like from the value table[0,1], it returns to me the first name of the corresponding person in the list of persons SURNAME

[Gribouillis]

I don't understand the question. Could you give a complete example of input and expected output and what is the link between the given input and the expected output ?

[William049]

There is the complete example in my first post.

I have a list :

liste = [[' NAME1',' SURNAME1'],[' NAME2',' SURNAME2'],[' NAME3',' SURNAME3']]

I get the output of one of my functions :

def descendants(num3):
    descendants = []
    for i in range(len(listeparentes)):
        if (num3 == listeparentes[i][0]):
            descendants.append(listeparentes[i][1])
    return (descendants)

The output for example is that :

[0, 1]

Now I want to reconcile the table of values and the list of values.
So the output should be :

SURNAME1
SURNAME2

[Gribouillis]

Why SURNAME1 and SURNAME2 and not SURNAME3? How can the function return [0, 1]? What is the meaning, if any, of the 0 and the 1 ?

[William049]

The indice 0 and 1 cannot correspond to the SURNAME3 ...

0 = SURNAME1
1 = SURNAME2
My function return a list of index of brothers and sisters, but i want to return the SURNAME NOT THE INDEX xD

def ascendant(num3):
    ascendants = []
    for i in range(len(listeparentes)):
        if (num3 == listeparentes[i][1]):
            ascendants.append(listeparentes[i][0])
    return (ascendants)

So i need to create a function that will take the return of the function "ascendants" and will return the list of surnames of people

[Gribouillis]

This one should work:

def function(laliste, lesindices):
    return [laliste[i][1] for i in lesindices]

print(function(liste, [0, 1]))

Can you give example of num3, listeparentes in ascendant()?

[William049]

You're very close to good code.

Look a screen of my program that will be the more simple :) : http://prntscr.com/hzyrhn

PS : Error in screen that's not "Les ascendants connus de cette personne sont [0]"
but " Les descendants connus de cette personne sont [0]" , that change nothing for the code :)


EDIT : That work !
http://prntscr.com/hzyuax
The new code :

def function(laliste, lesindices):
    return [laliste[i][1] for i in lesindices]
print(function(liste, [u]descendants(num1)))[/u]

---

I'm trying to delete ["] of the return of the function you have created, so i'm using my code :

def affichage():
    for i in range(len(listepersonnes)):
        for j in range(len(listepersonnes[i])):
            print(listepersonnes[i][j], end=" ")
        print()

But my code doens't take argument..
It's possible to modify your function in order to create a new list ?
If it's possible i will be able to use my code who's working :)

[Gribouillis]

Try

print('\n'.join(function(liste, descendants(num1))))

This is based on this example

>>> L = ['spam', 'eggs', 'ham']
>>> print('\n'.join(L))
spam
eggs
ham

Can you post the whole code ?