fix new loader to create dir if it does not exist yet

Author: OckermanSethGVSU

test/dataset_test.py

@@ -335,7 +335,7 @@ def test_wiki():
 
 
 def test_windmilllarge():
-    loader = WindmillOutputLargeDatasetLoader()
+    loader = WindmillOutputLargeDatasetLoader(raw_data_dir="/tmp/")
     dataset = loader.get_dataset()
     for epoch in range(2):
         for snapshot in dataset:

torch_geometric_temporal/dataset/windmilllarge.py

@@ -30,6 +30,7 @@ def __init__(self, raw_data_dir=os.path.join(os.getcwd(), "data"), index=False):
 
 
     def _read_web_data(self):
+        os.makedirs(self.raw_data_dir, exist_ok=True)
         if not os.path.isfile(
             os.path.join(self.raw_data_dir, "windmill_output.json")
         ):