complex type: Added __doc__

vm/src/obj/objcomplex.rs

@@ -8,8 +8,18 @@ use num_complex::Complex64;
 
 pub fn init(context: &PyContext) {
     let complex_type = &context.complex_type;
+
+    let complex_doc =
+        "Create a complex number from a real part and an optional imaginary part.\n\n\
+         This is equivalent to (real + imag*1j) where imag defaults to 0.";
+
     context.set_attr(&complex_type, "__add__", context.new_rustfunc(complex_add));
     context.set_attr(&complex_type, "__new__", context.new_rustfunc(complex_new));
+    context.set_attr(
+        &complex_type,
+        "__doc__",
+        context.new_str(complex_doc.to_string()),
+    );
     context.set_attr(
         &complex_type,
         "__repr__",