Make sure that as_type arguments are respected in Frame.put_parameter…

…s for lists of values as well (#575)

python/podio/frame.py

@@ -249,7 +249,7 @@ def put_parameter(self, key, value, as_type=None):
                 raise ValueError(f"Cannot put a parameter of type {type_name} into a Frame")
 
             par_type = vec_types[0]
-            if isinstance(value[0], float):
+            if as_type is None and isinstance(value[0], float):
                 # Always store floats as doubles from the python side
                 par_type = par_type.replace("float", "double")
 

tests/read_python_frame.h

@@ -87,6 +87,7 @@ int checkParameters(const podio::Frame& frame) {
   if (realFloats.size() != 3 || realFloats[0] != 1.23f || realFloats[1] != 4.56f || realFloats[2] != 7.89f) {
     std::cerr << "Parameter more_real_floats was not stored as correctly (expected [1.23, 4.56, 7.89], actual"
               << realFloats << ")" << std::endl;
+    return 1;
   }
 
   return 0;