Explicit attribute type annotations

src/structlog/_output.py

@@ -271,6 +271,8 @@ class BytesLogger:
 
     __slots__ = ("_file", "_flush", "_lock", "_write", "name")
 
+    name: str | None
+
     def __init__(
         self, file: BinaryIO | None = None, *, name: str | None = None
     ):

src/structlog/processors.py

@@ -147,6 +147,8 @@ class LogfmtRenderer:
     .. versionadded:: 21.5.0
     """
 
+    bool_as_flag: bool
+
     def __init__(
         self,
         sort_keys: bool = False,
@@ -404,6 +406,8 @@ class ExceptionRenderer:
     .. versionadded:: 22.1.0
     """
 
+    format_exception: ExceptionTransformer
+
     def __init__(
         self,
         exception_formatter: ExceptionTransformer = _format_exception,
@@ -478,6 +482,10 @@ class TimeStamper:
 
     __slots__ = ("_stamper", "fmt", "key", "utc")
 
+    fmt: str | None
+    utc: bool
+    key: str
+
     def __init__(
         self,
         fmt: str | None = None,
@@ -580,6 +588,8 @@ class MaybeTimeStamper:
 
     __slots__ = ("stamper",)
 
+    stamper: TimeStamper
+
     def __init__(
         self,
         fmt: str | None = None,
@@ -654,6 +664,8 @@ class ExceptionPrettyPrinter:
        Fixed *exception_formatter* so that it overrides the default if set.
     """
 
+    format_exception: ExceptionTransformer
+
     def __init__(
         self,
         file: TextIO | None = None,
@@ -971,6 +983,9 @@ class EventRenamer:
     See also the :ref:`rename-event` recipe.
     """
 
+    to: str
+    replace_by: str | None
+
     def __init__(self, to: str, replace_by: str | None = None):
         self.to = to
         self.replace_by = replace_by

src/structlog/stdlib.py

@@ -784,6 +784,8 @@ class PositionalArgumentsFormatter:
     removed from the event dict after formatting a message.
     """
 
+    remove_positional_args: bool
+
     def __init__(self, remove_positional_args: bool = True) -> None:
         self.remove_positional_args = remove_positional_args
 
@@ -1094,6 +1096,14 @@ class ProcessorFormatter(logging.Formatter):
     .. versionadded:: 23.3.0 *use_get_message*
     """
 
+    processors: Sequence[Processor]
+    foreign_pre_chain: Sequence[Processor] | None
+    keep_exc_info: bool
+    keep_stack_info: bool
+    logger: logging.Logger | None
+    pass_foreign_args: bool
+    use_get_message: bool
+
     def __init__(
         self,
         processor: Processor | None = None,
@@ -1117,7 +1127,6 @@ def __init__(
             )
             raise TypeError(msg)
 
-        self.processors: Sequence[Processor]
         if processor is not None:
             self.processors = (self.remove_processors_meta, processor)
         elif processors:

src/structlog/tracebacks.py

@@ -424,6 +424,15 @@ class ExceptionDictTransformer:
        Handle exception groups.
     """
 
+    show_locals: bool
+    locals_max_length: int
+    locals_max_string: int
+    locals_hide_dunder: bool
+    locals_hide_sunder: bool
+    suppress: Sequence[str]
+    max_frames: int
+    use_rich: bool
+
     def __init__(
         self,
         *,
@@ -450,7 +459,7 @@ def __init__(
         self.locals_max_string = locals_max_string
         self.locals_hide_dunder = locals_hide_dunder
         self.locals_hide_sunder = locals_hide_sunder
-        self.suppress: Sequence[str] = []
+        self.suppress = []
         for suppress_entity in suppress:
             if not isinstance(suppress_entity, str):
                 if suppress_entity.__file__ is None:

src/structlog/twisted.py

@@ -133,6 +133,8 @@ class ReprWrapper:
     Note the extra quotes in the unwrapped example.
     """
 
+    string: str
+
     def __init__(self, string: str) -> None:
         self.string = string