But make it 3.8 friendly.

src/hipscat/catalog/association_catalog/association_catalog.py

@@ -31,7 +31,7 @@ def __init__(
         pixels: PixelInputTypes,
         join_pixels: JoinPixelInputTypes,
         catalog_path=None,
-        storage_options: Union[Dict[Any, Any] | None] = None,
+        storage_options: Union[Dict[Any, Any], None] = None,
     ) -> None:
         if not catalog_info.catalog_type == CatalogType.ASSOCIATION:
             raise ValueError("Catalog info `catalog_type` must be 'association'")
@@ -59,7 +59,7 @@ def _get_partition_join_info_from_pixels(
 
     @classmethod
     def _read_args(
-        cls, catalog_base_dir: FilePointer, storage_options: Union[Dict[Any, Any] | None] = None
+        cls, catalog_base_dir: FilePointer, storage_options: Union[Dict[Any, Any], None] = None
     ) -> Tuple[CatalogInfoClass, PixelInputTypes, JoinPixelInputTypes]:  # type: ignore[override]
         args = super()._read_args(catalog_base_dir, storage_options=storage_options)
         partition_join_info_file = paths.get_partition_join_info_pointer(catalog_base_dir)
@@ -70,7 +70,7 @@ def _read_args(
 
     @classmethod
     def _check_files_exist(
-        cls, catalog_base_dir: FilePointer, storage_options: Union[Dict[Any, Any] | None] = None
+        cls, catalog_base_dir: FilePointer, storage_options: Union[Dict[Any, Any], None] = None
     ):
         super()._check_files_exist(catalog_base_dir, storage_options=storage_options)
         partition_join_info_file = paths.get_partition_join_info_pointer(catalog_base_dir)

src/hipscat/catalog/association_catalog/partition_join_info.py

@@ -32,7 +32,7 @@ def _check_column_names(self):
 
     @classmethod
     def read_from_file(
-        cls, partition_join_info_file: FilePointer, storage_options: Union[Dict[Any, Any] | None] = None
+        cls, partition_join_info_file: FilePointer, storage_options: Union[Dict[Any, Any], None] = None
     ) -> Self:
         """Read partition join info from a `partition_join_info.csv` file to create an object
 

src/hipscat/catalog/catalog.py

@@ -36,7 +36,7 @@ def __init__(
         catalog_info: CatalogInfoClass,
         pixels: PixelInputTypes,
         catalog_path: str = None,
-        storage_options: Union[Dict[Any, Any] | None] = None,
+        storage_options: Union[Dict[Any, Any], None] = None,
     ) -> None:
         """Initializes a Catalog
 

src/hipscat/catalog/dataset/base_catalog_info.py

@@ -44,7 +44,7 @@ def __str__(self):
 
     @classmethod
     def read_from_metadata_file(
-        cls, catalog_info_file: FilePointer, storage_options: Union[Dict[Any, Any] | None] = None
+        cls, catalog_info_file: FilePointer, storage_options: Union[Dict[Any, Any], None] = None
     ) -> Self:
         """Read catalog info from the `catalog_info.json` metadata file
 

src/hipscat/catalog/dataset/catalog_info_factory.py

@@ -51,7 +51,7 @@ def create_catalog_info(keywords: dict, catalog_type: Optional[CatalogType] = No
     return ci_class(**catalog_info_keywords)
 
 
-def from_catalog_dir(catalog_base_dir: FilePointer, storage_options: Union[Dict[Any, Any] | None] = None):
+def from_catalog_dir(catalog_base_dir: FilePointer, storage_options: Union[Dict[Any, Any], None] = None):
     """Generate a typed catalog info object from the type specified in the
     catalog info file.
 

src/hipscat/catalog/dataset/dataset.py

@@ -21,7 +21,7 @@ def __init__(
         self,
         catalog_info: CatalogInfoClass,
         catalog_path=None,
-        storage_options: Union[Dict[Any, Any] | None] = None,
+        storage_options: Union[Dict[Any, Any], None] = None,
     ) -> None:
         """Initializes a Dataset
 
@@ -44,7 +44,7 @@ def __init__(
 
     @classmethod
     def read_from_hipscat(
-        cls, catalog_path: str, storage_options: Union[Dict[Any, Any] | None] = None
+        cls, catalog_path: str, storage_options: Union[Dict[Any, Any], None] = None
     ) -> Self:
         """Reads a HiPSCat Catalog from a HiPSCat directory
 
@@ -63,7 +63,7 @@ def read_from_hipscat(
 
     @classmethod
     def _read_args(
-        cls, catalog_base_dir: FilePointer, storage_options: Union[Dict[Any, Any] | None] = None
+        cls, catalog_base_dir: FilePointer, storage_options: Union[Dict[Any, Any], None] = None
     ) -> Tuple[CatalogInfoClass]:
         catalog_info_file = paths.get_catalog_info_pointer(catalog_base_dir)
         catalog_info = cls.CatalogInfoClass.read_from_metadata_file(
@@ -73,13 +73,13 @@ def _read_args(
 
     @classmethod
     def _read_kwargs(
-        cls, catalog_base_dir: FilePointer, storage_options: Union[Dict[Any, Any] | None] = None
+        cls, catalog_base_dir: FilePointer, storage_options: Union[Dict[Any, Any], None] = None
     ) -> dict:
         return {"catalog_path": str(catalog_base_dir), "storage_options": storage_options}
 
     @classmethod
     def _check_files_exist(
-        cls, catalog_base_dir: FilePointer, storage_options: Union[Dict[Any, Any] | None] = None
+        cls, catalog_base_dir: FilePointer, storage_options: Union[Dict[Any, Any], None] = None
     ):
         if not file_io.does_file_or_directory_exist(catalog_base_dir, storage_options=storage_options):
             raise FileNotFoundError(f"No directory exists at {str(catalog_base_dir)}")

src/hipscat/catalog/healpix_dataset/healpix_dataset.py

@@ -28,7 +28,7 @@ def __init__(
         catalog_info: CatalogInfoClass,
         pixels: PixelInputTypes,
         catalog_path: str = None,
-        storage_options: Union[Dict[Any, Any] | None] = None,
+        storage_options: Union[Dict[Any, Any], None] = None,
     ) -> None:
         """Initializes a Catalog
 
@@ -79,7 +79,7 @@ def _get_pixel_tree_from_pixels(pixels: PixelInputTypes) -> PixelTree:
 
     @classmethod
     def _read_args(
-        cls, catalog_base_dir: FilePointer, storage_options: Union[Dict[Any, Any] | None] = None
+        cls, catalog_base_dir: FilePointer, storage_options: Union[Dict[Any, Any], None] = None
     ) -> Tuple[CatalogInfoClass, PartitionInfo]:
         args = super()._read_args(catalog_base_dir, storage_options=storage_options)
         partition_info_file = paths.get_partition_info_pointer(catalog_base_dir)
@@ -88,7 +88,7 @@ def _read_args(
 
     @classmethod
     def _check_files_exist(
-        cls, catalog_base_dir: FilePointer, storage_options: Union[Dict[Any, Any] | None] = None
+        cls, catalog_base_dir: FilePointer, storage_options: Union[Dict[Any, Any], None] = None
     ):
         super()._check_files_exist(catalog_base_dir, storage_options=storage_options)
         partition_info_file = paths.get_partition_info_pointer(catalog_base_dir)

src/hipscat/catalog/partition_info.py

@@ -46,7 +46,7 @@ def write_to_file(self, partition_info_file: FilePointer):
 
     @classmethod
     def read_from_file(
-        cls, partition_info_file: FilePointer, storage_options: Union[Dict[Any, Any] | None] = None
+        cls, partition_info_file: FilePointer, storage_options: Union[Dict[Any, Any], None] = None
     ):
         """Read partition info from a `partition_info.csv` file to create an object
 

src/hipscat/inspection/almanac.py

@@ -33,7 +33,7 @@ class Almanac:
     """
 
     def __init__(
-        self, include_default_dir=True, dirs=None, storage_options: Union[Dict[Any, Any] | None] = None
+        self, include_default_dir=True, dirs=None, storage_options: Union[Dict[Any, Any], None] = None
     ):
         """Create new almanac."""
         self.files = {}

src/hipscat/inspection/almanac_info.py

@@ -18,7 +18,7 @@ class AlmanacInfo:
     """Container for parsed almanac information."""
 
     file_path: str = ""
-    storage_options: Union[Dict[Any, Any] | None] = field(default_factory=dict)
+    storage_options: Union[Dict[Any, Any], None] = field(default_factory=dict)
     namespace: str = ""
     catalog_path: str = ""
     catalog_name: str = ""
@@ -76,7 +76,7 @@ def get_default_dir() -> str:
 
     @classmethod
     def from_catalog_dir(
-        cls, catalog_base_dir: str, storage_options: Union[Dict[Any, Any] | None] = None
+        cls, catalog_base_dir: str, storage_options: Union[Dict[Any, Any], None] = None
     ) -> Self:
         """Create almanac information from the catalog information found at the target directory"""
         catalog_info = catalog_info_factory.from_catalog_dir(
@@ -93,7 +93,7 @@ def from_catalog_dir(
         return cls(**args)
 
     @classmethod
-    def from_file(cls, file: str, storage_options: Union[Dict[Any, Any] | None] = None) -> Self:
+    def from_file(cls, file: str, storage_options: Union[Dict[Any, Any], None] = None) -> Self:
         """Create almanac information from an almanac file."""
         _, fmt = os.path.splitext(file)
         if fmt != ".yml":
@@ -106,7 +106,7 @@ def write_to_file(
         directory=None,
         default_dir=True,
         fmt="yml",
-        storage_options: Union[Dict[Any, Any] | None] = None,
+        storage_options: Union[Dict[Any, Any], None] = None,
     ):
         """Write the almanac to an almanac file"""
         if default_dir and directory:

src/hipscat/inspection/visualize_catalog.py

@@ -13,7 +13,7 @@
 from hipscat.io import file_io, paths
 
 
-def _read_point_map(catalog_base_dir, storage_options: Union[Dict[Any, Any] | None] = None):
+def _read_point_map(catalog_base_dir, storage_options: Union[Dict[Any, Any], None] = None):
     """Read the object spatial distribution information from a healpix FITS file.
 
     Args:

src/hipscat/io/file_io/file_io.py

@@ -15,7 +15,7 @@
 
 
 def make_directory(
-    file_pointer: FilePointer, exist_ok: bool = False, storage_options: Union[Dict[Any, Any] | None] = None
+    file_pointer: FilePointer, exist_ok: bool = False, storage_options: Union[Dict[Any, Any], None] = None
 ):
     """Make a directory at a given file pointer
 
@@ -36,7 +36,7 @@ def make_directory(
 
 
 def remove_directory(
-    file_pointer: FilePointer, ignore_errors=False, storage_options: Union[Dict[Any, Any] | None] = None
+    file_pointer: FilePointer, ignore_errors=False, storage_options: Union[Dict[Any, Any], None] = None
 ):
     """Remove a directory, and all contents, recursively.
 
@@ -61,7 +61,7 @@ def write_string_to_file(
     file_pointer: FilePointer,
     string: str,
     encoding: str = "utf-8",
-    storage_options: Union[Dict[Any, Any] | None] = None,
+    storage_options: Union[Dict[Any, Any], None] = None,
 ):
     """Write a string to a text file
 
@@ -77,7 +77,7 @@ def write_string_to_file(
 
 
 def load_text_file(
-    file_pointer: FilePointer, encoding: str = "utf-8", storage_options: Union[Dict[Any, Any] | None] = None
+    file_pointer: FilePointer, encoding: str = "utf-8", storage_options: Union[Dict[Any, Any], None] = None
 ):
     """Load a text file content to a list of strings.
 
@@ -96,7 +96,7 @@ def load_text_file(
 
 
 def load_json_file(
-    file_pointer: FilePointer, encoding: str = "utf-8", storage_options: Union[Dict[Any, Any] | None] = None
+    file_pointer: FilePointer, encoding: str = "utf-8", storage_options: Union[Dict[Any, Any], None] = None
 ) -> dict:
     """Load a json file to a dictionary
 
@@ -117,7 +117,7 @@ def load_json_file(
 
 
 def load_csv_to_pandas(
-    file_pointer: FilePointer, storage_options: Union[Dict[Any, Any] | None] = None, **kwargs
+    file_pointer: FilePointer, storage_options: Union[Dict[Any, Any], None] = None, **kwargs
 ) -> pd.DataFrame:
     """Load a csv file to a pandas dataframe
 
@@ -132,7 +132,7 @@ def load_csv_to_pandas(
 
 
 def load_parquet_to_pandas(
-    file_pointer: FilePointer, storage_options: Union[Dict[Any, Any] | None] = None, **kwargs
+    file_pointer: FilePointer, storage_options: Union[Dict[Any, Any], None] = None, **kwargs
 ) -> pd.DataFrame:
     """Load a parquet file to a pandas dataframe
 
@@ -149,7 +149,7 @@ def load_parquet_to_pandas(
 def write_dataframe_to_csv(
     dataframe: pd.DataFrame,
     file_pointer: FilePointer,
-    storage_options: Union[Dict[Any, Any] | None] = None,
+    storage_options: Union[Dict[Any, Any], None] = None,
     **kwargs,
 ):
     """Write a pandas DataFrame to a CSV file
@@ -165,7 +165,7 @@ def write_dataframe_to_csv(
 
 
 def write_dataframe_to_parquet(
-    dataframe: pd.DataFrame, file_pointer, storage_options: Union[Dict[Any, Any] | None] = None
+    dataframe: pd.DataFrame, file_pointer, storage_options: Union[Dict[Any, Any], None] = None
 ):
     """Write a pandas DataFrame to a parquet file
 
@@ -178,7 +178,7 @@ def write_dataframe_to_parquet(
 
 
 def read_parquet_metadata(
-    file_pointer: FilePointer, storage_options: Union[Dict[Any, Any] | None] = None, **kwargs
+    file_pointer: FilePointer, storage_options: Union[Dict[Any, Any], None] = None, **kwargs
 ) -> pq.FileMetaData:
     """Read FileMetaData from footer of a single Parquet file.
 
@@ -195,7 +195,7 @@ def read_parquet_metadata(
     return parquet_file
 
 
-def read_parquet_dataset(dir_pointer: FilePointer, storage_options: Union[Dict[Any, Any] | None] = None):
+def read_parquet_dataset(dir_pointer: FilePointer, storage_options: Union[Dict[Any, Any], None] = None):
     """Read parquet dataset from directory pointer.
 
     Args:
@@ -224,7 +224,7 @@ def read_parquet_dataset(dir_pointer: FilePointer, storage_options: Union[Dict[A
     return dataset
 
 
-def read_parquet_file(file_pointer: FilePointer, storage_options: Union[Dict[Any, Any] | None] = None):
+def read_parquet_file(file_pointer: FilePointer, storage_options: Union[Dict[Any, Any], None] = None):
     """Read parquet file from file pointer.
 
     Args:
@@ -239,7 +239,7 @@ def write_parquet_metadata(
     schema: Any,
     file_pointer: FilePointer,
     metadata_collector: list | None = None,
-    storage_options: Union[Dict[Any, Any] | None] = None,
+    storage_options: Union[Dict[Any, Any], None] = None,
     **kwargs,
 ):
     """Write a metadata only parquet file from a schema
@@ -260,7 +260,7 @@ def write_parquet_metadata(
     )
 
 
-def read_fits_image(map_file_pointer: FilePointer, storage_options: Union[Dict[Any, Any] | None] = None):
+def read_fits_image(map_file_pointer: FilePointer, storage_options: Union[Dict[Any, Any], None] = None):
     """Read the object spatial distribution information from a healpix FITS file.
 
     Args:
@@ -280,7 +280,7 @@ def read_fits_image(map_file_pointer: FilePointer, storage_options: Union[Dict[A
 
 
 def write_fits_image(
-    histogram: np.ndarray, map_file_pointer: FilePointer, storage_options: Union[Dict[Any, Any] | None] = None
+    histogram: np.ndarray, map_file_pointer: FilePointer, storage_options: Union[Dict[Any, Any], None] = None
 ):
     """Write the object spatial distribution information to a healpix FITS file.
 
@@ -297,7 +297,7 @@ def write_fits_image(
             _map_file.write(_tmp_file.read())
 
 
-def read_yaml(file_handle: FilePointer, storage_options: Union[Dict[Any, Any] | None] = None):
+def read_yaml(file_handle: FilePointer, storage_options: Union[Dict[Any, Any], None] = None):
     """Reads yaml file from filesystem.
 
     Args:
@@ -310,7 +310,7 @@ def read_yaml(file_handle: FilePointer, storage_options: Union[Dict[Any, Any] |
     return metadata
 
 
-def delete_file(file_handle: FilePointer, storage_options: Union[Dict[Any, Any] | None] = None):
+def delete_file(file_handle: FilePointer, storage_options: Union[Dict[Any, Any], None] = None):
     """Deletes file from filesystem.
 
     Args:
@@ -322,7 +322,7 @@ def delete_file(file_handle: FilePointer, storage_options: Union[Dict[Any, Any]
 
 
 def read_parquet_file_to_pandas(
-    file_pointer: FilePointer, storage_options: Union[Dict[Any, Any] | None] = None, **kwargs
+    file_pointer: FilePointer, storage_options: Union[Dict[Any, Any], None] = None, **kwargs
 ) -> pd.DataFrame:
     """Reads a parquet file to a pandas DataFrame