build: rtd configuration

Author: samedii

.readthedocs.yml

@@ -5,6 +5,13 @@
 # Required
 version: 2
 
+# Add this build section
+build:
+  os: ubuntu-22.04
+  tools:
+    python: "3.8"
+
+
 # Build documentation in the docs/ directory with Sphinx
 sphinx:
   configuration: docs/source/conf.py

datastream/dataset.py

@@ -200,7 +200,7 @@ def composed_fn(dataframe, index):
             get_item=composed_fn,
         )
 
-    def starmap(self: Dataset[T], function: Callable[Union[..., R]]) -> Dataset[R]:
+    def starmap(self: Dataset[T], function: Callable[..., R]) -> Dataset[R]:
         """
         Creates a new dataset with the function added to the dataset pipeline.
         The dataset's pipeline should return an iterable that will be