knowing for loop position in a list

[medic5678]

I've got a text variable, my_word.
I want to run a for loop

For letter in my_word:
if letter == "f"

I want to know the index number of the letter that's being tested to see whether it's an f

Thanks.

[ndc85430]

Look up the built-in enumerate function.

(I'm on a phone, so I apologise for the terse reply!)

[Yoriz]

my_words = """I've got a text variable, my_word.
I want to run a for loop

For letter in my_word:
if letter == "f"

I want to know the index number of the letter that's being tested to see whether it's an f"""


for index, letter in enumerate(my_words):
    if letter == "f":
        print(index)

Output:
51
85
98
135
191

[Pedroski55]

Or, do what enumerate does behind the scenes explicitly:

myword = 'abcdefghf_fyou_mate'

findex = -1
for letter in myword:
    findex +=1
    if letter == 'f':
        print(f'This letter f has the list index {findex}.')

[perfringo]

For letter in my_word:
if letter == "f"

I want to know the index number of the letter that's being tested to see whether it's an f

As written it does make little sense. Letter passing if letter == "f" is "f", there is no need to use index to doublecheck whether its an f. If you don't trust Python to operate correctly while executing conditional then there is also no certainty in results of testing while using index number.