Support comments

trans/transpiler/phases/emit_cpp/module.py

@@ -28,3 +28,12 @@ class ModuleVisitor(BlockVisitor):
             yield from self.import_module(node.module)
             for alias in node.names:
                 yield f"auto& {alias.asname or alias.name} = py_{node.module}::all.{alias.name};"
+
+    def visit_Expr(self, node: ast.Expr) -> Iterable[str]:
+        if isinstance(node.value, ast.Str):
+            if "\n" in node.value.s:
+                yield f"/*{node.value.s}*/"
+            else:
+                yield f"//{node.value.s}"
+        else:
+            raise NotImplementedError(node)