[Tutor] changing list element in loop

[Steven D'Aprano]

Oh, and another thing...

On 27/04/13 20:31, Jim Mooney wrote:

>What's the simplest way to go through a list, find
> something, and replace it with something else?

The simplest way is not to do it at all. Instead, create a new list:


vowels = 'aeiouy'
result = []
for char in vowels:
     if char == 'e':
         char = 'P'
     result.append(char)

result = ''.join(result)
print(result)


Of course, in this specific case, even faster and simpler is this:

result = vowels.replace('e', 'P')


but that's specifically a string method and doesn't generalise to
lists of arbitrary objects.




-- 
Steven