Avoid some TYPE_CHECKING

It's better not to use it when possible.

Author: bluetech

src/_pytest/_code/code.py

@@ -55,7 +55,7 @@
 if sys.version_info < (3, 11):
     from exceptiongroup import BaseExceptionGroup
 
-_TracebackStyle = Literal["long", "short", "line", "no", "native", "value", "auto"]
+TracebackStyle = Literal["long", "short", "line", "no", "native", "value", "auto"]
 
 
 class Code:
@@ -628,7 +628,7 @@ def _getreprcrash(self) -> Optional["ReprFileLocation"]:
     def getrepr(
         self,
         showlocals: bool = False,
-        style: _TracebackStyle = "long",
+        style: TracebackStyle = "long",
         abspath: bool = False,
         tbfilter: Union[
             bool, Callable[["ExceptionInfo[BaseException]"], Traceback]
@@ -809,7 +809,7 @@ class FormattedExcinfo:
     fail_marker: ClassVar = "E"
 
     showlocals: bool = False
-    style: _TracebackStyle = "long"
+    style: TracebackStyle = "long"
     abspath: bool = True
     tbfilter: Union[bool, Callable[[ExceptionInfo[BaseException]], Traceback]] = True
     funcargs: bool = False
@@ -1174,7 +1174,7 @@ def toterminal(self, tw: TerminalWriter) -> None:
 class ReprTraceback(TerminalRepr):
     reprentries: Sequence[Union["ReprEntry", "ReprEntryNative"]]
     extraline: Optional[str]
-    style: _TracebackStyle
+    style: TracebackStyle
 
     entrysep: ClassVar = "_ "
 
@@ -1208,7 +1208,7 @@ def __init__(self, tblines: Sequence[str]) -> None:
 class ReprEntryNative(TerminalRepr):
     lines: Sequence[str]
 
-    style: ClassVar[_TracebackStyle] = "native"
+    style: ClassVar[TracebackStyle] = "native"
 
     def toterminal(self, tw: TerminalWriter) -> None:
         tw.write("".join(self.lines))
@@ -1220,7 +1220,7 @@ class ReprEntry(TerminalRepr):
     reprfuncargs: Optional["ReprFuncArgs"]
     reprlocals: Optional["ReprLocals"]
     reprfileloc: Optional["ReprFileLocation"]
-    style: _TracebackStyle
+    style: TracebackStyle
 
     def _write_entry_lines(self, tw: TerminalWriter) -> None:
         """Write the source code portions of a list of traceback entries with syntax highlighting.

src/_pytest/config/__init__.py

@@ -54,7 +54,10 @@
 import _pytest._code
 from _pytest._code import ExceptionInfo
 from _pytest._code import filter_traceback
+from _pytest._code.code import TracebackStyle
 from _pytest._io import TerminalWriter
+from _pytest.config.argparsing import Argument
+from _pytest.config.argparsing import Parser
 import _pytest.deprecated
 import _pytest.hookspec
 from _pytest.outcomes import fail
@@ -71,9 +74,7 @@
 
 
 if TYPE_CHECKING:
-    from .argparsing import Argument
-    from .argparsing import Parser
-    from _pytest._code.code import _TracebackStyle
+    from _pytest.cacheprovider import Cache
     from _pytest.terminal import TerminalReporter
 
 
@@ -1030,6 +1031,9 @@ class ArgsSource(enum.Enum):
         #: 'testpaths' configuration value.
         TESTPATHS = enum.auto()
 
+    # Set by cacheprovider plugin.
+    cache: Optional["Cache"]
+
     def __init__(
         self,
         pluginmanager: PytestPluginManager,
@@ -1091,11 +1095,6 @@ def __init__(
         self.args_source = Config.ArgsSource.ARGS
         self.args: List[str] = []
 
-        if TYPE_CHECKING:
-            from _pytest.cacheprovider import Cache
-
-            self.cache: Optional[Cache] = None
-
     @property
     def rootpath(self) -> Path:
         """The path to the :ref:`rootdir <rootdir>`.
@@ -1175,7 +1174,7 @@ def notify_exception(
         option: Optional[argparse.Namespace] = None,
     ) -> None:
         if option and getattr(option, "fulltrace", False):
-            style: _TracebackStyle = "long"
+            style: TracebackStyle = "long"
         else:
             style = "native"
         excrepr = excinfo.getrepr(

src/_pytest/debugging.py

@@ -13,12 +13,12 @@
 from typing import Optional
 from typing import Tuple
 from typing import Type
-from typing import TYPE_CHECKING
 from typing import Union
 import unittest
 
 from _pytest import outcomes
 from _pytest._code import ExceptionInfo
+from _pytest.capture import CaptureManager
 from _pytest.config import Config
 from _pytest.config import ConftestImportFailure
 from _pytest.config import hookimpl
@@ -27,11 +27,7 @@
 from _pytest.config.exceptions import UsageError
 from _pytest.nodes import Node
 from _pytest.reports import BaseReport
-
-
-if TYPE_CHECKING:
-    from _pytest.capture import CaptureManager
-    from _pytest.runner import CallInfo
+from _pytest.runner import CallInfo
 
 
 def _validate_usepdb_cls(value: str) -> Tuple[str, str]:
@@ -310,7 +306,7 @@ def pytest_pyfunc_call(self, pyfuncitem) -> Generator[None, object, object]:
         return (yield)
 
 
-def wrap_pytest_function_for_tracing(pyfuncitem):
+def wrap_pytest_function_for_tracing(pyfuncitem) -> None:
     """Change the Python function object of the given Function item by a
     wrapper which actually enters pdb before calling the python function
     itself, effectively leaving the user in the pdb prompt in the first
@@ -322,14 +318,14 @@ def wrap_pytest_function_for_tracing(pyfuncitem):
     # python < 3.7.4) runcall's first param is `func`, which means we'd get
     # an exception if one of the kwargs to testfunction was called `func`.
     @functools.wraps(testfunction)
-    def wrapper(*args, **kwargs):
+    def wrapper(*args, **kwargs) -> None:
         func = functools.partial(testfunction, *args, **kwargs)
         _pdb.runcall(func)
 
     pyfuncitem.obj = wrapper
 
 
-def maybe_wrap_pytest_function_for_tracing(pyfuncitem):
+def maybe_wrap_pytest_function_for_tracing(pyfuncitem) -> None:
     """Wrap the given pytestfunct item for tracing support if --trace was given in
     the command line."""
     if pyfuncitem.config.getvalue("trace"):

src/_pytest/fixtures.py

@@ -60,6 +60,7 @@
 from _pytest.deprecated import check_ispytest
 from _pytest.deprecated import MARKED_FIXTURE
 from _pytest.deprecated import YIELD_FIXTURE
+from _pytest.main import Session
 from _pytest.mark import Mark
 from _pytest.mark import ParameterSet
 from _pytest.mark.structures import MarkDecorator
@@ -78,7 +79,6 @@
 
 
 if TYPE_CHECKING:
-    from _pytest.main import Session
     from _pytest.python import CallSpec2
     from _pytest.python import Function
     from _pytest.python import Metafunc

src/_pytest/main.py

@@ -38,7 +38,6 @@
 from _pytest.config import UsageError
 from _pytest.config.argparsing import Parser
 from _pytest.config.compat import PathAwareHookProxy
-from _pytest.fixtures import FixtureManager
 from _pytest.outcomes import exit
 from _pytest.pathlib import absolutepath
 from _pytest.pathlib import bestrelpath
@@ -55,6 +54,8 @@
 if TYPE_CHECKING:
     from typing import Self
 
+    from _pytest.fixtures import FixtureManager
+
 
 def pytest_addoption(parser: Parser) -> None:
     parser.addini(
@@ -551,7 +552,7 @@ class Session(nodes.Collector):
     # Set on the session by runner.pytest_sessionstart.
     _setupstate: SetupState
     # Set on the session by fixtures.pytest_sessionstart.
-    _fixturemanager: FixtureManager
+    _fixturemanager: "FixtureManager"
     exitstatus: Union[int, ExitCode]
 
     def __init__(self, config: Config) -> None:

src/_pytest/mark/structures.py

@@ -31,6 +31,7 @@
 from _pytest.deprecated import check_ispytest
 from _pytest.deprecated import MARKED_FIXTURE
 from _pytest.outcomes import fail
+from _pytest.scope import _ScopeName
 from _pytest.warning_types import PytestUnknownMarkWarning
 
 
@@ -430,7 +431,6 @@ def store_mark(obj, mark: Mark, *, stacklevel: int = 2) -> None:
 # Typing for builtin pytest marks. This is cheating; it gives builtin marks
 # special privilege, and breaks modularity. But practicality beats purity...
 if TYPE_CHECKING:
-    from _pytest.scope import _ScopeName
 
     class _SkipMarkDecorator(MarkDecorator):
         @overload  # type: ignore[override,no-overload-impl]

src/_pytest/nodes.py

@@ -30,6 +30,7 @@
 from _pytest._code.code import ExceptionInfo
 from _pytest._code.code import TerminalRepr
 from _pytest._code.code import Traceback
+from _pytest._code.code import TracebackStyle
 from _pytest.compat import LEGACY_PATH
 from _pytest.config import Config
 from _pytest.config import ConftestImportFailure
@@ -49,7 +50,6 @@
     from typing import Self
 
     # Imported here due to circular import.
-    from _pytest._code.code import _TracebackStyle
     from _pytest.main import Session
 
 
@@ -416,7 +416,7 @@ def _traceback_filter(self, excinfo: ExceptionInfo[BaseException]) -> Traceback:
     def _repr_failure_py(
         self,
         excinfo: ExceptionInfo[BaseException],
-        style: "Optional[_TracebackStyle]" = None,
+        style: "Optional[TracebackStyle]" = None,
     ) -> TerminalRepr:
         from _pytest.fixtures import FixtureLookupError
 
@@ -474,7 +474,7 @@ def _repr_failure_py(
     def repr_failure(
         self,
         excinfo: ExceptionInfo[BaseException],
-        style: "Optional[_TracebackStyle]" = None,
+        style: "Optional[TracebackStyle]" = None,
     ) -> Union[str, TerminalRepr]:
         """Return a representation of a collection or test failure.
 

src/_pytest/stepwise.py

@@ -1,18 +1,14 @@
 from typing import List
 from typing import Optional
-from typing import TYPE_CHECKING
 
 from _pytest import nodes
+from _pytest.cacheprovider import Cache
 from _pytest.config import Config
 from _pytest.config.argparsing import Parser
 from _pytest.main import Session
 from _pytest.reports import TestReport
-import pytest
 
 
-if TYPE_CHECKING:
-    from _pytest.cacheprovider import Cache
-
 STEPWISE_CACHE_DIR = "cache/stepwise"
 
 
@@ -37,7 +33,6 @@ def pytest_addoption(parser: Parser) -> None:
     )
 
 
-@pytest.hookimpl
 def pytest_configure(config: Config) -> None:
     if config.option.stepwise_skip:
         # allow --stepwise-skip to work on its own merits.

src/_pytest/unittest.py

@@ -41,10 +41,11 @@
 
     import twisted.trial.unittest
 
-    _SysExcInfoType = Union[
-        Tuple[Type[BaseException], BaseException, types.TracebackType],
-        Tuple[None, None, None],
-    ]
+
+_SysExcInfoType = Union[
+    Tuple[Type[BaseException], BaseException, types.TracebackType],
+    Tuple[None, None, None],
+]
 
 
 def pytest_pycollect_makeitem(
@@ -228,7 +229,7 @@ def teardown(self) -> None:
     def startTest(self, testcase: "unittest.TestCase") -> None:
         pass
 
-    def _addexcinfo(self, rawexcinfo: "_SysExcInfoType") -> None:
+    def _addexcinfo(self, rawexcinfo: _SysExcInfoType) -> None:
         # Unwrap potential exception info (see twisted trial support below).
         rawexcinfo = getattr(rawexcinfo, "_rawexcinfo", rawexcinfo)
         try:
@@ -264,7 +265,7 @@ def _addexcinfo(self, rawexcinfo: "_SysExcInfoType") -> None:
         self.__dict__.setdefault("_excinfo", []).append(excinfo)
 
     def addError(
-        self, testcase: "unittest.TestCase", rawexcinfo: "_SysExcInfoType"
+        self, testcase: "unittest.TestCase", rawexcinfo: _SysExcInfoType
     ) -> None:
         try:
             if isinstance(rawexcinfo[1], exit.Exception):
@@ -274,7 +275,7 @@ def addError(
         self._addexcinfo(rawexcinfo)
 
     def addFailure(
-        self, testcase: "unittest.TestCase", rawexcinfo: "_SysExcInfoType"
+        self, testcase: "unittest.TestCase", rawexcinfo: _SysExcInfoType
     ) -> None:
         self._addexcinfo(rawexcinfo)
 
@@ -287,7 +288,7 @@ def addSkip(self, testcase: "unittest.TestCase", reason: str) -> None:
     def addExpectedFailure(
         self,
         testcase: "unittest.TestCase",
-        rawexcinfo: "_SysExcInfoType",
+        rawexcinfo: _SysExcInfoType,
         reason: str = "",
     ) -> None:
         try:

testing/code/test_excinfo.py

@@ -28,7 +28,7 @@
 
 
 if TYPE_CHECKING:
-    from _pytest._code.code import _TracebackStyle
+    from _pytest._code.code import TracebackStyle
 
 if sys.version_info < (3, 11):
     from exceptiongroup import ExceptionGroup
@@ -925,7 +925,7 @@ def entry():
         )
         excinfo = pytest.raises(ValueError, mod.entry)
 
-        styles: tuple[_TracebackStyle, ...] = ("long", "short")
+        styles: tuple[TracebackStyle, ...] = ("long", "short")
         for style in styles:
             p = FormattedExcinfo(style=style)
             reprtb = p.repr_traceback(excinfo)
@@ -1052,7 +1052,7 @@ def entry():
         )
         excinfo = pytest.raises(ValueError, mod.entry)
 
-        styles: tuple[_TracebackStyle, ...] = ("short", "long", "no")
+        styles: tuple[TracebackStyle, ...] = ("short", "long", "no")
         for style in styles:
             for showlocals in (True, False):
                 repr = excinfo.getrepr(style=style, showlocals=showlocals)