MOD: Align list_fields optional dataset param

Author: cjdsellers

databento/historical/api/batch.py

@@ -113,7 +113,7 @@ def submit_job(
         validate_enum(stype_in, SType, "stype_in")
         validate_enum(stype_out, SType, "stype_out")
 
-        params: List[Tuple[str, str]] = BentoHttpAPI._timeseries_params(
+        params: List[Tuple[str, Optional[str]]] = BentoHttpAPI._timeseries_params(
             dataset=dataset,
             start=start,
             end=end,

databento/historical/api/metadata.py

@@ -83,7 +83,7 @@ def list_datasets(
 
     def list_schemas(
         self,
-        dataset: Union[Dataset, str],
+        dataset: Optional[Union[Dataset, str]] = None,
         start_date: Optional[Union[date, str]] = None,
         end_date: Optional[Union[date, str]] = None,
     ) -> List[str]:
@@ -94,7 +94,7 @@ def list_schemas(
 
         Parameters
         ----------
-        dataset : Dataset or str
+        dataset : Dataset or str, optional
             The dataset code (string identifier) for the request.
         start_date : date or str, optional
             The start date (UTC) for the request range.
@@ -228,7 +228,7 @@ def list_unit_prices(
         validate_maybe_enum(schema, Schema, "schema")
         validate_maybe_enum(mode, FeedMode, "mode")
 
-        params: List[Tuple[str, str]] = [
+        params: List[Tuple[str, Optional[str]]] = [
             ("dataset", enum_or_str_lowercase(dataset, "dataset")),
             ("mode", maybe_enum_or_str_lowercase(mode, "mode")),
             ("schema", maybe_enum_or_str_lowercase(schema, "schema")),
@@ -289,7 +289,7 @@ def get_record_count(
         validate_enum(schema, Schema, "schema")
         validate_enum(stype_in, SType, "stype_in")
 
-        params: List[Tuple[str, str]] = [
+        params: List[Tuple[str, Optional[str]]] = [
             ("dataset", enum_or_str_lowercase(dataset, "dataset")),
             ("symbols", maybe_symbols_list_to_string(symbols)),
             ("schema", Schema(schema).value),
@@ -354,7 +354,7 @@ def get_billable_size(
         validate_enum(schema, Schema, "schema")
         validate_enum(stype_in, SType, "stype_in")
 
-        params: List[Tuple[str, str]] = super()._timeseries_params(
+        params: List[Tuple[str, Optional[str]]] = super()._timeseries_params(
             dataset=dataset,
             start=start,
             end=end,
@@ -421,7 +421,7 @@ def get_cost(
         validate_enum(schema, Schema, "schema")
         validate_enum(stype_in, SType, "stype_in")
 
-        params: List[Tuple[str, str]] = super()._timeseries_params(
+        params: List[Tuple[str, Optional[str]]] = super()._timeseries_params(
             dataset=dataset,
             start=start,
             end=end,

databento/historical/api/timeseries.py

@@ -79,7 +79,7 @@ def stream(
         validate_enum(stype_in, SType, "stype_in")
         validate_enum(stype_out, SType, "stype_out")
 
-        params: List[Tuple[str, str]] = BentoHttpAPI._timeseries_params(
+        params: List[Tuple[str, Optional[str]]] = BentoHttpAPI._timeseries_params(
             dataset=dataset,
             start=start,
             end=end,
@@ -171,7 +171,7 @@ async def stream_async(
         validate_enum(stype_in, SType, "stype_in")
         validate_enum(stype_out, SType, "stype_out")
 
-        params: List[Tuple[str, str]] = BentoHttpAPI._timeseries_params(
+        params: List[Tuple[str, Optional[str]]] = BentoHttpAPI._timeseries_params(
             dataset=dataset,
             start=start,
             end=end,

databento/historical/http.py

@@ -49,18 +49,12 @@ def _timeseries_params(
         limit: Optional[int] = None,
         stype_in: SType,
         stype_out: SType = SType.PRODUCT_ID,
-    ) -> List[Tuple[str, str]]:
-        # Parse inputs
-        dataset = enum_or_str_lowercase(dataset, "dataset")
-        start = maybe_datetime_to_string(start)
-        end = maybe_datetime_to_string(end)
-        symbols = maybe_symbols_list_to_string(symbols)
-
+    ) -> List[Tuple[str, Optional[str]]]:
         params: List[Tuple[str, Any]] = [
-            ("dataset", dataset),
-            ("start", start),
-            ("end", end),
-            ("symbols", symbols),
+            ("dataset", enum_or_str_lowercase(dataset, "dataset")),
+            ("start", maybe_datetime_to_string(start)),
+            ("end", maybe_datetime_to_string(end)),
+            ("symbols", maybe_symbols_list_to_string(symbols)),
             ("schema", schema.value),
             ("stype_in", stype_in.value),
             ("stype_out", stype_out.value),