Fixup typing of Namespace

spec/API_specification/dataframe_api/typing.py

@@ -65,104 +65,89 @@
 class Namespace(Protocol):
     __dataframe_api_version__: str
 
-    @staticmethod
-    def Int64() -> Int64:
+    class Int64():
         ...
 
-    @staticmethod
-    def Int32() -> Int32:
+    class Int32():
         ...
 
-    @staticmethod
-    def Int16() -> Int16:
+    class Int16():
         ...
 
-    @staticmethod
-    def Int8() -> Int8:
+    class Int8():
         ...
 
-    @staticmethod
-    def UInt64() -> UInt64:
+    class UInt64():
         ...
 
-    @staticmethod
-    def UInt32() -> UInt32:
+    class UInt32():
         ...
 
-    @staticmethod
-    def UInt16() -> UInt16:
+    class UInt16():
         ...
 
-    @staticmethod
-    def UInt8() -> UInt8:
+    class UInt8():
         ...
 
-    @staticmethod
-    def Float64() -> Float64:
+    class Float64():
         ...
 
-    @staticmethod
-    def Float32() -> Float32:
+    class Float32():
         ...
 
-    @staticmethod
-    def Bool() -> Bool:
+    class Bool():
         ...
 
-    @staticmethod
-    def Date() -> Date:
+    class Date():
         ...
 
-    @staticmethod
-    def Datetime(time_unit: Literal['ms', 'us'], time_zone: str | None) -> Datetime:
-        ...
+    class Datetime():
+        def __init__(
+            self,
+            time_unit: Literal['ms', 'us'],
+            time_zone: str | None,
+        ):
+            ...
 
-    @staticmethod
-    def String() -> String:
+    class String():
         ...
 
-    @staticmethod
-    def concat(dataframes: Sequence[DataFrame]) -> DataFrame:
+    def concat(self, dataframes: Sequence[DataFrame]) -> DataFrame:
         ...
 
-    @staticmethod
     def column_from_sequence(
+        self,
         sequence: Sequence[Any],
         *,
         dtype: Any,
         name: str = "",
     ) -> Column:
         ...
 
-    @staticmethod
-    def dataframe_from_columns(*columns: Column) -> DataFrame:
+    def dataframe_from_columns(self, *columns: Column) -> DataFrame:
         ...
 
-    @staticmethod
     def column_from_1d_array(
-        array: Any, *, dtype: Any, name: str = ""
+        self, array: Any, *, dtype: Any, name: str = ""
     ) -> Column:
         ...
 
-    @staticmethod
     def dataframe_from_2d_array(
+        self,
         array: Any,
         *,
         names: Sequence[str],
         dtypes: Mapping[str, Any],
     ) -> DataFrame:
         ...
 
-    @staticmethod
-    def is_null(value: object, /) -> bool:
+    def is_null(self, value: object, /) -> bool:
         ...
 
-    @staticmethod
-    def is_dtype(dtype: Any, kind: str | tuple[str, ...]) -> bool:
+    def is_dtype(self, dtype: Any, kind: str | tuple[str, ...]) -> bool:
         ...
 
-    @staticmethod
-    def date(year: int, month: int, day: int) -> Scalar:
+    def date(self, year: int, month: int, day: int) -> Scalar:
         ...
 
 class SupportsDataFrameAPI(Protocol):