// include the latest version of the regex crate in your Cargo.toml
extern crate regex;
use regex::Regex;
fn main() {
let regex = Regex::new(r"(?m)^[Pp]ython v?(?:(?:(?<epoch>[0-9]+)!)?(?<release>[0-9]+(?:\.[0-9]+)*)(?<pre>[-_\.]?(?<preLabel>(a|b|c|rc|alpha|beta|pre|preview))[-_\.]?(?<preNumber>[0-9]+)?)?(?<post>(?:-(?<postNumber0>[0-9]+))|(?:[-_\.]?(?<postLabel>post|rev|r)[-_\.]?(?<postNumber1>[0-9]+)?))?(?<dev>[-_\.]?(?<devLabel>dev)[-_\.]?(?<devNumber>[0-9]+)?)?)(?:\+(?<local>[a-z0-9]+(?:[-_\.][a-z0-9]+)*))?$").unwrap();
let string = "Python 2.7.15
python v3.6.6";
// result will be an iterator over tuples containing the start and end indices for each match in the string
let result = regex.captures_iter(string);
for mat in result {
println!("{:?}", mat);
}
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Rust, please visit: https://docs.rs/regex/latest/regex/