Use parameter.description for properties if the parameter's schema does not have description

Author: nats

openapi_python_client/parser/openapi.py

@@ -379,6 +379,12 @@ def add_parameters(
 
             unique_parameters.add(unique_param)
 
+            # In OpenAPI specification both of a parameter, and its schema, may optionally have a description.
+            # openapi-python-client only uses the schema description for the parameter, so if
+            # the schema does not have a description we will supply the parameter's description instead.
+            if param.param_schema.description is None:
+                param.param_schema.description = param.description
+
             prop, new_schemas = property_from_data(
                 name=param.name,
                 required=param.required,

openapi_python_client/parser/properties/schemas.py

@@ -166,6 +166,7 @@ def parameter_from_data(
         style=data.style,
         param_schema=data.param_schema,
         param_in=data.param_in,
+        description=data.description,
     )
     parameters = attr.evolve(parameters, classes_by_name={**parameters.classes_by_name, name: new_param})
     return new_param, parameters