add before/after task to ParallelTask only when not command list is n…

…ot empty (#93)
mara · Feb 16, 2023 · a53904f · a53904f
1 parent 405352f
commit a53904f
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/mara_pipelines/pipelines.py b/mara_pipelines/pipelines.py
@@ -133,8 +133,10 @@ def add_parallel_tasks(self, sub_pipeline: 'Pipeline') -> None:
     def launch(self) -> 'Pipeline':
         sub_pipeline = Pipeline(self.id, description=f'Runs f{self.id} in parallel',
                                 max_number_of_parallel_tasks=self.max_number_of_parallel_tasks)
-        sub_pipeline.add_initial(Task(id='before', description='Runs commands-before', commands=self.commands_before))
-        sub_pipeline.add_final(Task(id='after', description='Runs commands-after', commands=self.commands_after))
+        if self.commands_before:
+            sub_pipeline.add_initial(Task(id='before', description='Runs commands-before', commands=self.commands_before))
+        if self.commands_after:
+            sub_pipeline.add_final(Task(id='after', description='Runs commands-after', commands=self.commands_after))
 
         self.add_parallel_tasks(sub_pipeline)