just seeing if anyone can help me on my mission as I’m a little stuck. I’m trying to find all the positions of a specific nested element in multiple list. here’s a diagram to try and better explain where everything is.
data = [['name', 'city', 'height']]
there are multiple of these lists of [‘name’, ‘city’, ‘height’] in this data. I’m trying to shorten the list down to a city inputted by the user which will then find the average height and list the persons name closest to that average height.
I can get just the whole elements position but not the position in the nested list. along with the average height.
>Solution :
Use enumerate() to iterate over the list with its indexes. Then you can save the matching indexes in a list.
indexes = [i for i, (name, city, height) in enumerate(data) if city == search_city]
But it’s not clear that you actually need the indexes. Just use the list comprehension to filter down to that city.
matches = [el for el in data if el[1] == search_city]
avg_height = sum(el[2] for el in matches) / len(matches)