How do you turn a list of (x,y) coordinate points into a list of integers in the same format?

Question

This is the input and output I am looking for given the user input

I want to do this using a function. I am assuming you will have to iterate through each set of points to convert them to integers, then back to a list?

You can extract all set of coordinates from the string using a regex (https://www.w3schools.com/python/python_regex.asp) and findall, then treat each set to convert it to the desired format. — Swifty, Oct 21 '22 at 23:35
Now do a little research, and try to post at least some starting code. — Swifty, Oct 21 '22 at 23:42
The input **is not** "a list of (x,y) coordinate points". It is... just a string. — Karl Knechtel, Oct 22 '22 at 00:17
Let's call it a string of x,y coordinates, without the () :) — Swifty, Oct 22 '22 at 00:30

Swifty · Answer 1 · 2022-10-22T00:13:01.200

Partial answer:

import re

a = '3,4 5,6 7,8 12,8 3,456'

Now you could use:

raw_coords = re.findall(r'[0-9]+,[0-9]+', a)

But then you'd have to use more regex to extract x and y from each "x,y" string

A more straightforward way would be to separately extract the x values and y values from your initial list: look up "lookbehind assertions" and "lookahead assertions".

For example:

xlist = re.findall(r'[0-9]+(?=,)', a)

(explanation: this finds all maximal strings of digits that are placed just before a ',')

For now, I'll let you do some research and try to complete the process.

How do you turn a list of (x,y) coordinate points into a list of integers in the same format?

1 Answers1