How to get numbers of out a string into a list in python using regex

Question

What regex statement do I need to get each number out of this list and then turn it into a string with each element being the number. For example, if the string is x = "[899, 908, 3260]" how do I make this list = [899, 908, 3260].

Answer 1

I don't think regular expressions is your 1st option to try here.

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JSON: Try to parse it as json:

import json
x = "[899, 908, 3260]"
print(json.loads(x))

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String functions: Alternatively, some string manipulation:

x = "[899, 908, 3260]"
print(list(map(int, x.strip('][').split(', '))))

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Regex: If for some reason you definately need regex, you should use re.findall:

import re
x = "[899, 908, 3260]"
print(list(map(int, re.findall(r"\d+", x))))

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All options mentioned above output:

[899, 908, 3260]

Answer 2

use eval function as eval(x). But some say it is exposed one.