Bug--

wrench/task.py

@@ -44,8 +44,8 @@ def __init__(self, simulation: Simulation, workflow: Workflow, name: str) -> Non
         self.min_num_cores = None
         self.max_num_cores = None
         self.memory = None
-        self.input_files = []
-        self.output_files = []
+        self.input_files = None
+        self.output_files = None
 
     class TaskState(Enum):
         NOT_READY = 0
@@ -74,6 +74,8 @@ def add_input_file(self, file: File) -> None:
         :type file: File
         """
         self._simulation._add_input_file(self, file)
+        if self.input_files is None:
+            self.input_files = []
         self.input_files.append(file)
 
     def add_output_file(self, file: File) -> None:
@@ -83,6 +85,8 @@ def add_output_file(self, file: File) -> None:
         :type file: File
         """
         self._simulation._add_output_file(self, file)
+        if self.output_files is None:
+            self.output_files = []
         self.output_files.append(file)
 
     def get_input_files(self) -> List[File]:
@@ -91,17 +95,19 @@ def get_input_files(self) -> List[File]:
         :return: List of input file names
         :rtype: List[File]
         """
+        if self.input_files is None:
+            self.input_files = self._simulation._get_task_input_files(self)
         return self.input_files
-        # return self._simulation._get_task_input_files(self)
 
     def get_output_files(self) -> List[File]:
         """
         Get the list of output files for this task
         :return: List of output file names
         :rtype: List[File]
         """
+        if self.output_files is None:
+            self.output_files = self._simulation._get_task_output_files(self)
         return self.output_files
-        # return self._simulation._get_task_output_files(self)
 
     def get_flops(self) -> float:
         """