Markdown Formatting

def first_non_repeating_letter(string):

print(string)

#your code here

if string == '':

return ''

d = {}

for letter in string:

if letter in d:

d[letter] += 1

else:

d[letter] = 1

if min(d.values()) > 1:

return ''

return [i for i in d if d[i] == 1 ][0]

first_non_repeating_letter("hello world, eh?")

---

def first_non_repeating_letter(string): print(string) #your code here if string == '': return ''

d = {}

for letter in string:
    if letter in d:
        d[letter] += 1
    else:
        d[letter] = 1

if min(d.values()) > 1:
    return ''

return [i for i in d if d[i] == 1 ][0]

first_non_repeating_letter("hello world, eh?")