tidy: remove python 3.9 support

Author: dmadisetti

marimo/_ast/app.py

@@ -6,7 +6,12 @@
 import os
 import sys
 import threading
-from collections.abc import Iterable, Iterator, Mapping
+from collections.abc import (
+    Iterable,
+    Iterator,
+    Mapping,
+    Sequence,  # noqa: TC003
+)
 from dataclasses import dataclass
 from pathlib import Path
 from textwrap import dedent
@@ -16,40 +21,28 @@
     Callable,
     Literal,
     Optional,
+    ParamSpec,
+    TypeAlias,
     TypeVar,
     Union,
     cast,
     overload,
 )
 
-from marimo._ast.app_config import _AppConfig
-from marimo._ast.cell_id import external_prefix
-from marimo._ast.parse import ast_parse
-from marimo._ast.variables import BUILTINS
-from marimo._convert.converters import MarimoConvert
-from marimo._schemas.serialization import (
-    AppInstantiation,
-    CellDef,
-    NotebookSerializationV1,
-)
-from marimo._types.ids import CellId_t
-
-if sys.version_info < (3, 10):
-    from typing_extensions import ParamSpec, TypeAlias
-else:
-    from typing import ParamSpec, TypeAlias
-
-from collections.abc import Sequence  # noqa: TC003
-
 from marimo import _loggers
+from marimo._ast.app_config import _AppConfig
 from marimo._ast.cell import Cell, CellConfig, CellImpl
+from marimo._ast.cell_id import external_prefix
 from marimo._ast.cell_manager import CellManager
 from marimo._ast.errors import (
     CycleError,
     MultipleDefinitionError,
     SetupRootError,
     UnparsableError,
 )
+from marimo._ast.parse import ast_parse
+from marimo._ast.variables import BUILTINS
+from marimo._convert.converters import MarimoConvert
 from marimo._messaging.mimetypes import KnownMimeType
 from marimo._output.hypertext import Html
 from marimo._output.rich_help import mddoc
@@ -65,6 +58,12 @@
     FunctionCallRequest,
     SetUIElementValueRequest,
 )
+from marimo._schemas.serialization import (
+    AppInstantiation,
+    CellDef,
+    NotebookSerializationV1,
+)
+from marimo._types.ids import CellId_t
 
 if TYPE_CHECKING:
     from collections.abc import Sequence

marimo/_ast/cell_manager.py

@@ -2,19 +2,15 @@
 from __future__ import annotations
 
 import os
-import sys
 from typing import (
     TYPE_CHECKING,
     Callable,
     Optional,
+    ParamSpec,
+    TypeAlias,
     TypeVar,
 )
 
-if sys.version_info < (3, 10):
-    from typing_extensions import ParamSpec, TypeAlias
-else:
-    from typing import ParamSpec, TypeAlias
-
 from marimo import _loggers
 from marimo._ast.cell import Cell, CellConfig
 from marimo._ast.cell_id import CellIdGenerator
@@ -44,7 +40,7 @@
 R = TypeVar("R")
 Fn: TypeAlias = Callable[P, R]
 Cls: TypeAlias = type
-Obj: TypeAlias = "Cls | Fn[P, R]"
+Obj: TypeAlias = Cls | Fn[P, R]
 
 LOGGER = _loggers.marimo_logger()
 

marimo/_ast/codegen.py

@@ -4,7 +4,6 @@
 import ast
 import os
 import re
-import sys
 import textwrap
 from typing import TYPE_CHECKING, Any, Literal, Optional
 
@@ -25,10 +24,7 @@
 if TYPE_CHECKING:
     from pathlib import Path
 
-if sys.version_info < (3, 10):
-    from typing_extensions import TypeAlias
-else:
-    from typing import TypeAlias
+from typing import TypeAlias
 
 Cls: TypeAlias = type
 

marimo/_ast/compiler.py

@@ -8,13 +8,12 @@
 import linecache
 import os
 import re
-import sys
 import textwrap
 import token as token_types
 import warnings
 from tokenize import tokenize
 from types import CodeType, FrameType
-from typing import Any, Callable, Optional, cast
+from typing import Any, Callable, Optional, TypeAlias, cast
 
 from marimo import _loggers
 from marimo._ast import parse
@@ -32,11 +31,6 @@
 from marimo._types.ids import CellId_t
 from marimo._utils.tmpdir import get_tmpdir
 
-if sys.version_info < (3, 10):
-    from typing_extensions import TypeAlias
-else:
-    from typing import TypeAlias
-
 LOGGER = _loggers.marimo_logger()
 Cls: TypeAlias = type
 

marimo/_ast/visitor.py

@@ -1034,52 +1034,49 @@ def visit_ImportFrom(self, node: ast.ImportFrom) -> ast.ImportFrom:
             )
         return node
 
-    if sys.version_info >= (3, 10):
-        # Match statements were introduced in Python 3.10
-        #
-        # Top-level match statements are awkward in marimo --- at parse-time,
-        # we have to register all names in every case/pattern as globals (since
-        # we don't know the value of the match subject), even though only a
-        # subset of the names will be bound at runtime. For this reason, in
-        # marimo, match statements should really only be used in local scopes.
-        def visit_MatchAs(self, node: ast.MatchAs) -> ast.MatchAs:
-            if node.name is not None:
-                node.name = self._if_local_then_mangle(node.name)
-                self._define(
-                    node,
-                    node.name,
-                    VariableData(kind="variable"),
-                )
-            if node.pattern is not None:
-                # pattern may contain additional MatchAs statements in it
-                self.visit(node.pattern)
-            return node
+    # Match statements were introduced in Python 3.10
+    #
+    # Top-level match statements are awkward in marimo --- at parse-time,
+    # we have to register all names in every case/pattern as globals (since
+    # we don't know the value of the match subject), even though only a
+    # subset of the names will be bound at runtime. For this reason, in
+    # marimo, match statements should really only be used in local scopes.
+    def visit_MatchAs(self, node: ast.MatchAs) -> ast.MatchAs:
+        if node.name is not None:
+            node.name = self._if_local_then_mangle(node.name)
+            self._define(
+                node,
+                node.name,
+                VariableData(kind="variable"),
+            )
+        if node.pattern is not None:
+            # pattern may contain additional MatchAs statements in it
+            self.visit(node.pattern)
+        return node
 
-        def visit_MatchMapping(
-            self, node: ast.MatchMapping
-        ) -> ast.MatchMapping:
-            if node.rest is not None:
-                node.rest = self._if_local_then_mangle(node.rest)
-                self._define(
-                    node,
-                    node.rest,
-                    VariableData(kind="variable"),
-                )
-            for key in node.keys:
-                self.visit(key)
-            for pattern in node.patterns:
-                self.visit(pattern)
-            return node
+    def visit_MatchMapping(self, node: ast.MatchMapping) -> ast.MatchMapping:
+        if node.rest is not None:
+            node.rest = self._if_local_then_mangle(node.rest)
+            self._define(
+                node,
+                node.rest,
+                VariableData(kind="variable"),
+            )
+        for key in node.keys:
+            self.visit(key)
+        for pattern in node.patterns:
+            self.visit(pattern)
+        return node
 
-        def visit_MatchStar(self, node: ast.MatchStar) -> ast.MatchStar:
-            if node.name is not None:
-                node.name = self._if_local_then_mangle(node.name)
-                self._define(
-                    node,
-                    node.name,
-                    VariableData(kind="variable"),
-                )
-            return node
+    def visit_MatchStar(self, node: ast.MatchStar) -> ast.MatchStar:
+        if node.name is not None:
+            node.name = self._if_local_then_mangle(node.name)
+            self._define(
+                node,
+                node.name,
+                VariableData(kind="variable"),
+            )
+        return node
 
     if sys.version_info >= (3, 12):
 

marimo/_cli/development/commands.py

@@ -452,13 +452,6 @@ def inline_packages(name: Path) -> None:
     if not name.exists():
         raise click.FileError(str(name))
 
-    # Validate >=3.10 for sys.stdlib_module_names
-    if sys.version_info < (3, 10):
-        # TOD: add support for < 3.10
-        # We can use https://github.com/omnilib/stdlibs
-        # to get the stdlib module names
-        raise click.UsageError("Requires Python >=3.10")
-
     package_names = module_name_to_pypi_name()
 
     def get_pypi_package_names() -> list[str]:

marimo/_convert/ipynb.py

@@ -404,17 +404,17 @@ def rename_named_node(
             name = node.name
             new_name = self._maybe_rename(cell, name, is_reference)
             node.name = new_name
-        if sys.version_info >= (3, 10):
-            if isinstance(node, (ast.MatchAs, ast.MatchStar)):
-                name = node.name
-                if name is not None:
-                    new_name = self._maybe_rename(cell, name, is_reference)
-                    node.name = new_name
-            elif isinstance(node, ast.MatchMapping):
-                name = node.rest
-                if name is not None:
-                    new_name = self._maybe_rename(cell, name, is_reference)
-                    node.rest = new_name
+
+        if isinstance(node, (ast.MatchAs, ast.MatchStar)):
+            name = node.name
+            if name is not None:
+                new_name = self._maybe_rename(cell, name, is_reference)
+                node.name = new_name
+        elif isinstance(node, ast.MatchMapping):
+            name = node.rest
+            if name is not None:
+                new_name = self._maybe_rename(cell, name, is_reference)
+                node.rest = new_name
         if sys.version_info >= (3, 12):
             if isinstance(
                 node, (ast.TypeVar, ast.ParamSpec, ast.TypeVarTuple)

marimo/_messaging/ops.py

@@ -613,14 +613,14 @@ class ColumnPreview(msgspec.Struct):
     stats: Optional[ColumnStats] = None
 
 
-# We shouldn't need to make table_name and column_name have default values.
-# We can use kw_only=True once we drop support for Python 3.9 (25-11-01).
-class DataColumnPreview(Op, ColumnPreview, tag="data-column-preview"):
+class DataColumnPreview(
+    Op, ColumnPreview, kw_only=True, tag="data-column-preview"
+):
     """Preview of a column in a dataset."""
 
     name: ClassVar[str] = "data-column-preview"
-    table_name: str = ""
-    column_name: str = ""
+    table_name: str
+    column_name: str
 
 
 class DataSourceConnections(Op, tag="data-source-connections"):

marimo/_plugins/core/web_component.py

@@ -17,15 +17,8 @@
 from marimo._output.mime import MIME
 
 if TYPE_CHECKING:
-    import sys
     from collections.abc import Mapping, Sequence
-
-    if sys.version_info < (3, 10):
-        from typing_extensions import TypeAlias
-    else:
-        from typing import TypeAlias
-
-    from typing import Optional
+    from typing import Optional, TypeAlias
 
     JSONType: TypeAlias = Union[
         Mapping[str, "JSONType"],

marimo/_plugins/ui/_core/registry.py

@@ -1,29 +1,21 @@
 # Copyright 2024 Marimo. All rights reserved.
 from __future__ import annotations
 
-import sys
 import weakref
-from typing import TYPE_CHECKING, Any, Optional, TypeVar, Union
-
-from marimo._runtime.context.types import ContextNotInitializedError
-
-if sys.version_info < (3, 10):
-    from typing_extensions import TypeAlias
-else:
-    from typing import TypeAlias
+from typing import TYPE_CHECKING, Any, Optional, TypeAlias, TypeVar
 
 from marimo._ast.app import _Namespace
 from marimo._plugins.ui._core.ui_element import UIElement
 from marimo._runtime.context import get_context
+from marimo._runtime.context.types import ContextNotInitializedError
 from marimo._types.ids import CellId_t, UIElementId
 
 if TYPE_CHECKING:
     from collections.abc import Iterable, Mapping
 
 T = TypeVar("T")
 
-# Recursive types don't support | or dict[] in py3.8/3.9 (25-11-01)
-LensValue: TypeAlias = Union[T, dict[str, "LensValue[T]"]]
+LensValue: TypeAlias = T | dict[str, "LensValue[T]"]
 
 
 class UIElementRegistry: