clean

src/main.rs

@@ -1,7 +1,10 @@
 mod python;
 
+use std::process;
+
 use clap::Parser;
 use python::setup_preset;
+use regex::Regex;
 
 #[derive(Parser)]
 #[clap(
@@ -34,19 +37,30 @@ struct UpdateArgs {
     preset: String,
 }
 
+fn check_pyver(preset: &str) {
+    let re = Regex::new(r"python(3\.\d+|4\.\d+)").unwrap();
+    // if let Some(caps) = re.captures(preset) {
+    if re.captures(preset).is_none() {
+        eprintln!("Python version not recognized in --preset, invalid input. Expected format: 'python3.xx'");
+        process::exit(1);
+    };
+}
+
 fn main() {
     match Cli::parse() {
         Cli::Create(args) => {
             println!("Creating project with name: {}", args.name);
             println!("Using preset: {:?} ", args.preset);
             if args.preset.starts_with("python") {
+                check_pyver(&args.preset);
                 setup_preset(&args.preset, args.name, true);
             } else {
                 eprintln!("Preset: {:?} not supported", args.preset);
             }
         }
         Cli::Update(args) => {
             println!("Updating project with preset: {:?}", args.preset);
+            check_pyver(&args.preset);
             setup_preset(&args.preset, "".to_string(), false);
         }
     }

src/python.rs

@@ -107,7 +107,7 @@ pub fn setup_preset(mut preset: &str, name: String, create: bool) {
         let ver = caps[1].to_string();
         (ver.clone(), format!("py{}", ver.replace('.', "")))
     } else {
-        eprintln!("Python version not recognized in --preset, invalid input");
+        eprintln!("Python version not recognized in --preset, invalid input. Expected format: 'python3.xx'");
         process::exit(1);
     };