Added export of timeweighting to Python code

src/lib.rs

@@ -62,6 +62,7 @@ fn lasprs(m: &Bound<'_, PyModule>) -> PyResult<()> {
     m.add_class::<ps::FreqWeighting>()?;
     m.add_class::<slm::SLMSettings>()?;
     m.add_class::<slm::SLM>()?;
+    m.add_class::<slm::TimeWeighting>()?;
     m.add_class::<ps::WindowType>()?;
     m.add_class::<ps::Overlap>()?;
     m.add_class::<ps::ApsMode>()?;

src/slm/tw.rs

@@ -1,16 +1,18 @@
 use crate::config::*;
+
+use strum::EnumMessage;
+use strum_macros::Display;
 /// Time weighting to use in level detection of Sound Level Meter.
-/// 
+///
 // Do the following when Pyo3 0.22 can finally be used combined with rust-numpy:
 // #[cfg_attr(feature = "python-bindings", pyclass(eq))]
 // For now:
 #[cfg_attr(feature = "python-bindings", pyclass)]
-#[derive(Clone, Copy, Debug, PartialEq)]
+#[derive(Clone, Copy, Debug, PartialEq, Display)]
 pub enum TimeWeighting {
     // I know that the curly braces here are not required and add some
     // boilerplate, but this is the only way Pyo3 swallows complex enums at the
     // moment.
-
     /// Slow time weighting ~ 1 s
     Slow {},
     /// Fast time weighting ~ 1/8 s
@@ -22,7 +24,7 @@ pub enum TimeWeighting {
         /// Custom time constant [s]
         t: Flt,
     },
-    
+
     /// A custom symmetric time weighting
     CustomAsymmetric {
         /// Time weighting when level is increasing
@@ -38,6 +40,14 @@ impl TimeWeighting {
     fn __eq__(&self, other: &Self) -> bool {
         self == other
     }
+    fn __str__(&self) -> String {
+        format!("{self}")
+    }
+    #[staticmethod]
+    fn all_standards() -> Vec<TimeWeighting> {
+        use TimeWeighting::*;
+        vec![Slow {}, Fast {}, Impulse {}]
+    }
 }
 
 impl Default for TimeWeighting {
@@ -85,3 +95,15 @@ impl TimeWeighting {
         }
     }
 }
+
+#[cfg(test)]
+mod test {
+    use crate::slm::TimeWeighting;
+
+    #[test]
+    fn test_tw() {
+        println!("Impulse: {}", TimeWeighting::Impulse {});
+        println!("Fast   : {}", TimeWeighting::Fast {});
+        println!("Slow   : {}", TimeWeighting::Slow {});
+    }
+}