diff --git a/setup.py b/setup.py
index c046cd8d..443a6023 100644
--- a/setup.py
+++ b/setup.py
@@ -24,11 +24,12 @@ if sys.version_info < (3, 6):
     print("Python 3.6 or newer is required", file=sys.stderr)
     sys.exit(1)
 
-from setuptools import setup, find_packages  # nopep8
-from subprocess import STDOUT, check_output, CalledProcessError  # nopep8
-from collections.abc import Mapping  # nopep8
-import re  # nopep8
+from setuptools import setup, find_packages
+from subprocess import STDOUT, check_output, CalledProcessError
+from collections.abc import Mapping
+import re
 
+# pylint: disable=w0613
 
 missing_program = '''
 The program '{program}' could not be executed or was not found on your
@@ -131,10 +132,11 @@ def check_external_program(
         program,
         need_version,
         package,
-        version_check_args=['--version'],
+        version_check_args=None,
         version_scrape_regex=re.compile(r'(\d+\.\d+(?:\.\d+)?)'),
         optional=False):
-
+    if not version_check_args:
+        version_check_args = ['--version']
     print(f'Checking for {program} >= {need_version}...')
     try:
         result = check_output(
diff --git a/src/ocrmypdf/_pipeline.py b/src/ocrmypdf/_pipeline.py
index 8ec40f71..16b0e279 100644
--- a/src/ocrmypdf/_pipeline.py
+++ b/src/ocrmypdf/_pipeline.py
@@ -581,7 +581,6 @@ def select_ocr_image(infiles, output_file, log, context):
     with Image.open(image) as im:
         from PIL import ImageColor
         from PIL import ImageDraw
-        from decimal import Decimal
 
         white = ImageColor.getcolor('#ffffff', im.mode)
         # pink = ImageColor.getcolor('#ff0080', im.mode)
@@ -800,8 +799,6 @@ def get_docinfo(base_pdf, options):
 
 
 def generate_postscript_stub(input_file, output_file, log, context):
-    options = context.get_options()
-    pdf = pikepdf.open(input_file)
     generate_pdfa_ps(output_file)
 
 
diff --git a/src/ocrmypdf/leptonica.py b/src/ocrmypdf/leptonica.py
index 99630d0c..0cc8b643 100644
--- a/src/ocrmypdf/leptonica.py
+++ b/src/ocrmypdf/leptonica.py
@@ -611,7 +611,7 @@ class Pix(LeptonicaObject):
                         0,
                     )
                 )
-        except (LeptonicaError, ValueError, IndexError) as e:
+        except (LeptonicaError, ValueError, IndexError):
             return
         finally:
             with suppress(FileNotFoundError):
diff --git a/src/ocrmypdf/optimize.py b/src/ocrmypdf/optimize.py
index 8d388dba..49b087ac 100644
--- a/src/ocrmypdf/optimize.py
+++ b/src/ocrmypdf/optimize.py
@@ -148,7 +148,7 @@ def extract_image_generic(*, pike, root, log, image, xref, options):
 def extract_images(pike, root, log, options, extract_fn):
     """Extract image using extract_fn
 
-    extract_fn decides where the image is interesting in this case
+    extract_fn decides whether the image is interesting in this case
     """
 
     include_xrefs = set()
diff --git a/src/ocrmypdf/pdfinfo/layout.py b/src/ocrmypdf/pdfinfo/layout.py
index 9b2b60a9..e6d04c9c 100644
--- a/src/ocrmypdf/pdfinfo/layout.py
+++ b/src/ocrmypdf/pdfinfo/layout.py
@@ -25,25 +25,11 @@ import pdfminer.pdfdevice
 import pdfminer.pdfinterp
 from pdfminer.converter import PDFLayoutAnalyzer
 from pdfminer.glyphlist import glyphname2unicode
-from pdfminer.layout import (
-    LAParams,
-    LTChar,
-    LTContainer,
-    LTLayoutContainer,
-    LTPage,
-    LTTextBox,
-    LTTextLine,
-)
+from pdfminer.layout import LAParams, LTChar, LTPage, LTTextBox
 from pdfminer.pdfdocument import PDFTextExtractionNotAllowed
-from pdfminer.pdffont import (
-    PDFCIDFont,
-    PDFFont,
-    PDFSimpleFont,
-    PDFType3Font,
-    PDFUnicodeNotDefined,
-)
+from pdfminer.pdffont import PDFFont, PDFSimpleFont, PDFUnicodeNotDefined
 from pdfminer.pdfpage import PDFPage
-from pdfminer.utils import bbox2str, fsplit, matrix2str
+from pdfminer.utils import bbox2str, matrix2str
 
 from ..exceptions import EncryptedPdfError
 
@@ -161,11 +147,21 @@ class LTStateAwareChar(LTChar):
         text,
         textwidth,
         textdisp,
+        ncs,
+        graphicstate,
         textstate,
-        *args,
     ):
         super().__init__(
-            matrix, font, fontsize, scaling, rise, text, textwidth, textdisp, *args
+            matrix,
+            font,
+            fontsize,
+            scaling,
+            rise,
+            text,
+            textwidth,
+            textdisp,
+            ncs,
+            graphicstate,
         )
         self.rendermode = textstate.render
 
@@ -223,11 +219,13 @@ class TextPositionTracker(PDFLayoutAnalyzer):
         self.pageno += 1
         self.receive_layout(self.cur_item)
 
-    def render_string(self, textstate, seq, *args):
+    def render_string(self, textstate, seq, ncs, graphicstate):
         self.textstate = textstate.copy()
-        super().render_string(self.textstate, seq, *args)
+        super().render_string(self.textstate, seq, ncs, graphicstate)
 
-    def render_char(self, matrix, font, fontsize, scaling, rise, cid, *args):
+    def render_char(
+        self, matrix, font, fontsize, scaling, rise, cid, ncs, graphicstate
+    ):
         try:
             text = font.to_unichr(cid)
             assert isinstance(text, str), str(type(text))
@@ -244,8 +242,9 @@ class TextPositionTracker(PDFLayoutAnalyzer):
             text,
             textwidth,
             textdisp,
+            ncs,
+            graphicstate,
             self.textstate,
-            *args,
         )
         self.cur_item.add(item)
         return item.adv
diff --git a/tests/spoof/tesseract_badutf8.py b/tests/spoof/tesseract_badutf8.py
index e38a7cf5..ba21bb17 100755
--- a/tests/spoof/tesseract_badutf8.py
+++ b/tests/spoof/tesseract_badutf8.py
@@ -22,8 +22,6 @@
 
 import sys
 
-import img2pdf
-from PIL import Image
 
 """Tesseract bad utf8 spoof
 
diff --git a/tests/spoof/tesseract_crash.py b/tests/spoof/tesseract_crash.py
index 0ad89909..8b6f90d8 100755
--- a/tests/spoof/tesseract_crash.py
+++ b/tests/spoof/tesseract_crash.py
@@ -20,7 +20,6 @@
 # TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 # SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-import os
 import signal
 import sys
 
diff --git a/tests/test_lept.py b/tests/test_lept.py
index 1f643625..142fc702 100644
--- a/tests/test_lept.py
+++ b/tests/test_lept.py
@@ -16,9 +16,6 @@
 # along with OCRmyPDF.  If not, see <http://www.gnu.org/licenses/>.
 
 
-import os
-import shutil
-import sys
 from os import fspath
 from pickle import dumps, loads
 
diff --git a/tests/test_main.py b/tests/test_main.py
index f428de90..79c50749 100644
--- a/tests/test_main.py
+++ b/tests/test_main.py
@@ -600,7 +600,7 @@ def test_closed_streams(spoof_tesseract_noop, ocrmypdf_exec, resources, outpdf):
         os.close(1)
 
     p_args = ocrmypdf_exec + [input_file, output_file]
-    p = Popen(
+    p = Popen(  # pylint: disable=subprocess-popen-preexec-fn
         p_args,
         close_fds=True,
         stdout=None,
diff --git a/tests/test_metadata.py b/tests/test_metadata.py
index 27528093..201ae8bb 100644
--- a/tests/test_metadata.py
+++ b/tests/test_metadata.py
@@ -27,7 +27,6 @@ import pytest
 
 import pikepdf
 from ocrmypdf.exceptions import ExitCode
-from ocrmypdf.exec import ghostscript
 from ocrmypdf.pdfa import SRGB_ICC_PROFILE, file_claims_pdfa, generate_pdfa_ps
 from pikepdf.models.metadata import decode_pdf_date
 
diff --git a/tests/test_optimize.py b/tests/test_optimize.py
index f73cd60c..e2eef80b 100644
--- a/tests/test_optimize.py
+++ b/tests/test_optimize.py
@@ -27,7 +27,7 @@ from ocrmypdf import optimize as opt
 from ocrmypdf.exec import jbig2enc, pngquant
 from ocrmypdf.exec.ghostscript import rasterize_pdf
 
-check_ocrmypdf = pytest.helpers.check_ocrmypdf
+check_ocrmypdf = pytest.helpers.check_ocrmypdf  # pylint: disable=e1101
 
 
 @pytest.mark.parametrize('pdf', ['multipage.pdf', 'palette.pdf'])
diff --git a/tests/test_pdfinfo.py b/tests/test_pdfinfo.py
index 087e9fed..a4ab14f6 100644
--- a/tests/test_pdfinfo.py
+++ b/tests/test_pdfinfo.py
@@ -15,11 +15,7 @@
 # You should have received a copy of the GNU General Public License
 # along with OCRmyPDF.  If not, see <http://www.gnu.org/licenses/>.
 
-import os
 import pickle
-import shutil
-import sys
-from contextlib import suppress
 from math import isclose
 from tempfile import NamedTemporaryFile
 
@@ -32,6 +28,8 @@ import pikepdf
 from ocrmypdf import pdfinfo
 from ocrmypdf.pdfinfo import Colorspace, Encoding
 
+# pylint: disable=protected-access
+
 
 def test_single_page_text(outdir):
     filename = outdir / 'text.pdf'
@@ -185,7 +183,7 @@ def test_ocr_detection(resources):
 @pytest.mark.parametrize(
     'testfile', ('truetype_font_nomapping.pdf', 'type3_font_nomapping.pdf')
 )
-@pytest.helpers.needs_pdfminer
+@pytest.helpers.needs_pdfminer  # pylint: disable=e1101
 def test_corrupt_font_detection(resources, testfile):
     try:
         import pdfminer
diff --git a/tests/test_rotation.py b/tests/test_rotation.py
index 3447570a..bfcf3dae 100644
--- a/tests/test_rotation.py
+++ b/tests/test_rotation.py
@@ -152,7 +152,7 @@ def test_autorotate_threshold(
         test_pdf=outdir / 'out.pdf',
         test_pageno=3,
     )
-    assert eval(correlation_test)
+    assert eval(correlation_test)  # pylint: disable=w0123
 
 
 def test_rotated_skew_timeout(resources, outpdf):
diff --git a/tests/test_tess4.py b/tests/test_tess4.py
index afd5b1dc..7720d16b 100644
--- a/tests/test_tess4.py
+++ b/tests/test_tess4.py
@@ -16,19 +16,17 @@
 # along with OCRmyPDF.  If not, see <http://www.gnu.org/licenses/>.
 
 import os
-import sys
 from contextlib import contextmanager
 from os import fspath
 from pathlib import Path
 
-import PyPDF2 as pypdf
 import pytest
 
 from ocrmypdf import pdfinfo
-from ocrmypdf.exceptions import ExitCode, MissingDependencyError
+from ocrmypdf.exceptions import MissingDependencyError
 from ocrmypdf.exec import tesseract
 
-# pylint: disable=no-member
+# pylint: disable=no-member,w0621
 spoof = pytest.helpers.spoof