// 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"(?mx)\s*
(?:
(?:^from\s+
( # Base (from (base) import ...)
(?:[a-zA-Z_][a-zA-Z_0-9]* # Variable name
(?:\.[a-zA-Z_][a-zA-Z_0-9]*)* # Attribute (.attr)
)
)\s+import\s+
)
|
(?:^import\s|,)\s*
)
( # Name of imported module (import (this))
(?:[a-zA-Z_][a-zA-Z_0-9]* # Variable name
(?:\.[a-zA-Z_][a-zA-Z_0-9]*)* # Attribute (.attr)
)
)
(?:
\s+as\s+
( # Variable module is imported into (import foo as bar)
(?:[a-zA-Z_][a-zA-Z_0-9]* # Variable name
(?:\.[a-zA-Z_][a-zA-Z_0-9]*)* # Attribute (.attr)
)
)
)?
\s*
(?=,|$) # Ensure there is another thing being imported or it is the end of string").unwrap();
let string = "import pandas, os, sys";
// 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/