Bugfixes on Python code generation (PickNikRobotics#152)

* Fix raising of validation error

* Fix inverse logic of 'unique' validator

Author: agonzat

generate_parameter_library_py/generate_parameter_library_py/python_convertions.py

@@ -92,7 +92,7 @@ def get_func_signature(self, function_name: str, base_type: str) -> str:
 
     @typechecked
     def initialization_fail_validation(self, param_name: str) -> str:
-        return f"raise InvalidParameterValueException('Invalid value set during initialization for parameter {param_name}: ' + validation_result)"
+        return f"raise InvalidParameterValueException('{param_name}',param.value, 'Invalid value set during initialization for parameter {param_name}: ' + validation_result)"
 
     @typechecked
     def initialization_pass_validation(self, param_name: str) -> str:

generate_parameter_library_py/generate_parameter_library_py/python_validators.py

@@ -71,7 +71,7 @@ def one_of(param, values):
 
     # Array validators
     def unique(param):
-        if not len(set(param.value)) != len(param.value):
+        if len(set(param.value)) != len(param.value):
             return f"Parameter '{param.name}' must only contain unique values"
         return ""