diff --git a/cyclonedx_py/client.py b/cyclonedx_py/client.py
index 53167c71d..81873e333 100644
--- a/cyclonedx_py/client.py
+++ b/cyclonedx_py/client.py
@@ -255,8 +255,10 @@ def _error_and_exit(message: str, *args: Any, exit_code: int = 1, **kwargs: Any)
 
     def _get_input_parser(self) -> BaseParser:
         if self._arguments.input_from_environment:
-            return EnvironmentParser(use_purl_bom_ref=self._arguments.use_purl_bom_ref,
-                                     debug_message=lambda m, *a, **k: self._debug_message(f'EnvironmentParser - {m}', *a, **k))
+            return EnvironmentParser(
+                use_purl_bom_ref=self._arguments.use_purl_bom_ref,
+                debug_message=lambda m, *a, **k: self._debug_message(f'EnvironmentParser - {m}', *a, **k)
+            )
 
         # All other Parsers will require some input - grab it now!
         if not self._arguments.input_source:
@@ -288,25 +290,35 @@ def _get_input_parser(self) -> BaseParser:
             input_data_fh.close()
 
         if self._arguments.input_from_conda_explicit:
-            return CondaListExplicitParser(conda_data=input_data,
-                                           use_purl_bom_ref=self._arguments.use_purl_bom_ref,
-                                           debug_message=lambda m, *a, **k: self._debug_message(f'CondaListExplicitParser - {m}', *a, **k))
+            return CondaListExplicitParser(
+                conda_data=input_data,
+                use_purl_bom_ref=self._arguments.use_purl_bom_ref,
+                debug_message=lambda m, *a, **k: self._debug_message(f'CondaListExplicitParser - {m}', *a, **k)
+            )
         elif self._arguments.input_from_conda_json:
-            return CondaListJsonParser(conda_data=input_data,
-                                       use_purl_bom_ref=self._arguments.use_purl_bom_ref,
-                                       debug_message=lambda m, *a, **k: self._debug_message(f'CondaListJsonParser - {m}', *a, **k))
+            return CondaListJsonParser(
+                conda_data=input_data,
+                use_purl_bom_ref=self._arguments.use_purl_bom_ref,
+                debug_message=lambda m, *a, **k: self._debug_message(f'CondaListJsonParser - {m}', *a, **k)
+            )
         elif self._arguments.input_from_pip:
-            return PipEnvParser(pipenv_contents=input_data,
-                                use_purl_bom_ref=self._arguments.use_purl_bom_ref,
-                                debug_message=lambda m, *a, **k: self._debug_message(f'PipEnvParser - {m}', *a, **k))
+            return PipEnvParser(
+                pipenv_contents=input_data,
+                use_purl_bom_ref=self._arguments.use_purl_bom_ref,
+                debug_message=lambda m, *a, **k: self._debug_message(f'PipEnvParser - {m}', *a, **k)
+            )
         elif self._arguments.input_from_poetry:
-            return PoetryParser(poetry_lock_contents=input_data,
-                                use_purl_bom_ref=self._arguments.use_purl_bom_ref,
-                                debug_message=lambda m, *a, **k: self._debug_message(f'PoetryParser - {m}', *a, **k))
+            return PoetryParser(
+                poetry_lock_contents=input_data,
+                use_purl_bom_ref=self._arguments.use_purl_bom_ref,
+                debug_message=lambda m, *a, **k: self._debug_message(f'PoetryParser - {m}', *a, **k)
+            )
         elif self._arguments.input_from_requirements:
-            return RequirementsParser(requirements_content=input_data,
-                                      use_purl_bom_ref=self._arguments.use_purl_bom_ref,
-                                      debug_message=lambda m, *a, **k: self._debug_message(f'RequirementsParser - {m}', *a, **k))
+            return RequirementsParser(
+                requirements_content=input_data,
+                use_purl_bom_ref=self._arguments.use_purl_bom_ref,
+                debug_message=lambda m, *a, **k: self._debug_message(f'RequirementsParser - {m}', *a, **k)
+            )
         else:
             raise CycloneDxCmdException('Parser type could not be determined.')
 
diff --git a/cyclonedx_py/parser/_debug.py b/cyclonedx_py/parser/_debug.py
index b0b1ec1ac..d924d3ee8 100644
--- a/cyclonedx_py/parser/_debug.py
+++ b/cyclonedx_py/parser/_debug.py
@@ -24,10 +24,10 @@
 
     DebugMessageCallback = Callable[[Arg(str, 'message'), VarArg(Any), KwArg(Any)], None]
     """Callback for debug messaging.
-    
-    :param message: the format string, 
+
+    :Parameter message: the format string
     :Other Parameters: the *args: to :func:`str.forma()`
-    :Keyword Arguments: the **kwargs to :func:`str.format()`.
+    :Keyword Arguments: the **kwargs to :func:`str.format()`
     """
 else:
     DebugMessageCallback = Callable[..., None]
diff --git a/cyclonedx_py/parser/requirements.py b/cyclonedx_py/parser/requirements.py
index 98847f6bf..303f9f3e6 100644
--- a/cyclonedx_py/parser/requirements.py
+++ b/cyclonedx_py/parser/requirements.py
@@ -20,7 +20,6 @@
 import os
 import os.path
 from tempfile import NamedTemporaryFile, _TemporaryFileWrapper  # Weak error
-from typing import Any, Optional
 
 from cyclonedx.model import HashType
 from cyclonedx.model.component import Component