Shortest code to return current index number in string in 'for n in 'word': loop-CodePudding

I have a question about strings. I thought that this code:

for n in 'banana':
    print(n)

would return this:

0 1 2 3 4 5

But, of course, it doesn't. It returns the value at each position in the string, not the position number. In order for me to understand this better, I thought it might help to write the simplest possible program to achieve the output I thought I'd get:

count = 0
for n in 'banana':
    print(count)
    count  = 1

This works, but surely there's a more direct way to access the position number that the current iteration is looking at? Can't see any methods that would achieve this directly though.

CodePudding user response：

These are all equivalent:

i = 0
for n in 'banana':
    print(i)
    i  = 1

for i, w in enumerate('banana'):
    print(i)

for i in range(len('banana')):
    print(i)

print(*range(len('banana')), sep='\n')

CodePudding user response：

As posted in the other answer, enumerate() works:

for idx, character in enumerate('myword'):
    print(f"Index={idx} character={character}")

It is worth pointing out that in this Python treats strings as arrays. When you have "abc"[0] it will return a. And, similarly, when you say 'give me each element in some array' it will simply give you the element, not the index of that element - which would be counterintuitive.