Counting specific letters within an array

2015-10-10

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Question

I am asked to create a function in which it counts all the leters from b-s within a string. Here is what i have so far:

def strange_count(s):
    count = 0
    s = s.lower()
    s_count = [b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s]
    while count <= len(s):
        for i in range(len(s_count)):
            if s_count[i] == s[count]:
                count += 1
    return

It is returning an error, any help would be greatly appreciated

File "", line 4, in strange_count
    s_count = [b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s]
NameError: name 'b' is not defined

Answer

This line:

s_count = [b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s]

should be like this:

s_count = ["b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s"]

Then you'll find that you're in an infinite loop, so try rewriting like this:

def strange_count(s):
  count   = 0
  s       = s.lower()
  s_count = ["b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s"]
  for letter in s:
    if letter in s_count:
      count += 1
  return count
print(strange_count("asfdsjfdlkwjrwoiureaoifhwabrejwer"))