Simplify related python code

python/podio/frame.py

@@ -32,7 +32,7 @@
 
 def _get_cpp_types(type_str):
     """Get all possible c++ types from the passed py_type string."""
-    types = list(filter(lambda t: type_str in t, SUPPORTED_PARAMETER_TYPES))
+    types = [t for t in SUPPORTED_PARAMETER_TYPES if type_str in t]
     if not types:
         raise ValueError(f"{type_str} cannot be mapped to a valid parameter type")
 
@@ -43,7 +43,7 @@ def _get_cpp_vector_types(type_str):
     """Get the possible std::vector<cpp_type> from the passed py_type string."""
     # Gather a list of all types that match the type_str (c++ or python)
     types = _get_cpp_types(type_str)
-    return [f"std::vector<{t}>" for t in map(lambda x: x[0], types)]
+    return [f"std::vector<{t[0]}>" for t in types]
 
 
 def _is_collection_base(thing):