I am trying to create a function that inputs a name and outputs a rank. what is the best way to create that function?

I am trying to create function that takes an input name and outputs a rank based on the order of the letters it has for example a=1 b=2

name = ab
rank = 3

import string

x = "richard"
y = "donald"
c = "Sam"
numbers = []


for i in range(1,27):
    numbers.append(i)

print(numbers)

alphabet_string = string.ascii_lowercase
alphabet_list = list(alphabet_string)

print(alphabet_list)

new_x = list(x)
new_y = list(y)
new_c = list(c)

zip_iterators = zip(alphabet_list,numbers)
dic = list(zip_iterators)

print(dic)

def rank(name):
    rank = 0
    for l in range(0,len(name)):
        for k,v in dic:
            if l == k:
                v += rank
        print(rank)

rank(new_c)

but I failed so far

>Solution :

letter_rank = {letter:rank for rank, letter in enumerate(string.ascii_lowercase, 1)}

def rank(name):
    return sum(letter_rank.get(c, 0) for c in name.lower())