diff --git a/cxxheaderparser/gentest.py b/cxxheaderparser/gentest.py
index a738298..c9fd498 100644
--- a/cxxheaderparser/gentest.py
+++ b/cxxheaderparser/gentest.py
@@ -1,7 +1,6 @@
 import argparse
 import dataclasses
 import inspect
-import re
 import subprocess
 import typing
 
@@ -72,7 +71,7 @@ def gentest(
         data = parse_string(content, options=options)
         if fail:
             raise ValueError("did not fail")
-    except CxxParseError as e:
+    except CxxParseError:
         if not fail:
             raise
         # do it again, but strip the content so the error message matches
diff --git a/cxxheaderparser/lexer.py b/cxxheaderparser/lexer.py
index b62e660..af7769f 100644
--- a/cxxheaderparser/lexer.py
+++ b/cxxheaderparser/lexer.py
@@ -1,5 +1,3 @@
-import contextlib
-from collections import deque
 import re
 import typing
 import sys
@@ -838,8 +836,6 @@ class BoundedTokenStream(TokenStream):
         return len(self.tokbuf) > 0
 
     def _fill_tokbuf(self, tokbuf: typing.Deque[LexToken]) -> bool:
-        from .errors import CxxParseError
-
         raise CxxParseError("no more tokens left in this group")
 
     def current_location(self) -> Location:
diff --git a/cxxheaderparser/parser.py b/cxxheaderparser/parser.py
index 1b53429..c35707c 100644
--- a/cxxheaderparser/parser.py
+++ b/cxxheaderparser/parser.py
@@ -94,7 +94,7 @@ class CxxParser:
         )
         self.anon_id = 0
 
-        self.verbose = True if self.options.verbose else False
+        self.verbose = self.options.verbose
         if self.verbose:
 
             def debug_print(fmt: str, *args: typing.Any) -> None:
diff --git a/cxxheaderparser/preprocessor.py b/cxxheaderparser/preprocessor.py
index 33382dd..33f7771 100644
--- a/cxxheaderparser/preprocessor.py
+++ b/cxxheaderparser/preprocessor.py
@@ -5,7 +5,6 @@ Contains optional preprocessor support via pcpp
 import io
 import re
 import os
-from os.path import relpath
 import typing
 from .options import PreprocessorFunction
 
diff --git a/cxxheaderparser/simple.py b/cxxheaderparser/simple.py
index a707877..421666b 100644
--- a/cxxheaderparser/simple.py
+++ b/cxxheaderparser/simple.py
@@ -50,7 +50,6 @@ from .types import (
 )
 
 from .parserstate import (
-    State,
     ClassBlockState,
     ExternBlockState,
     NamespaceBlockState,