diff --git a/arib/ass.py b/arib/ass.py
index fee4be6..297ac4b 100644
--- a/arib/ass.py
+++ b/arib/ass.py
@@ -12,18 +12,19 @@
 file.
 
 """
-from pathlib import Path
-from enum import Enum
 import copy
+import re
+import unicodedata
 from dataclasses import dataclass
+from enum import Enum
+from pathlib import Path
 from typing import List
-import unicodedata
+
 import arib.code_set as code_set
 import arib.control_characters as control_characters
-import re
 from arib.arib_exceptions import FileOpenError
-from arib.drcs_decoder import drcs_unpack_to_bitmap
 from arib.drcs_cache import DrcsGlyph
+from arib.drcs_decoder import drcs_unpack_to_bitmap
 
 
 # DRCS drawing support
diff --git a/arib/autosub.py b/arib/autosub.py
index e8af0a7..e08319b 100755
--- a/arib/autosub.py
+++ b/arib/autosub.py
@@ -10,22 +10,19 @@
 embedded in MPEG Transport Stream data.
 
 """
-from arib.bing import translate
-import arib.code_set as code_set
-import arib.control_characters as control_characters
+import argparse
 import codecs
+import copy
+import os
 import re
 
-import os
-import argparse
-import copy
-from arib.closed_caption import next_data_unit
-from arib.closed_caption import StatementBody
-from arib.mpeg.ts import next_ts_packet
-from arib.mpeg.ts import PESPacket
+import arib.code_set as code_set
+import arib.control_characters as control_characters
+from arib.bing import translate
+from arib.closed_caption import StatementBody, next_data_unit
 from arib.data_group import DataGroup
-from arib.secret_key import SECRET_KEY
-from arib.secret_key import CLIENT_ID
+from arib.mpeg.ts import PESPacket, next_ts_packet
+from arib.secret_key import CLIENT_ID, SECRET_KEY
 
 
 class Pos(object):
diff --git a/arib/bing.py b/arib/bing.py
index dcea9b6..3ad311e 100755
--- a/arib/bing.py
+++ b/arib/bing.py
@@ -12,9 +12,10 @@
 """
 import argparse
 import json
-import requests
 import urllib
 
+import requests
+
 
 def translate(text, from_language="ja", to_language="en", client_id="", secret_key=""):
     if not secret_key:
diff --git a/arib/closed_caption.py b/arib/closed_caption.py
index 5e05af2..36d63e6 100644
--- a/arib/closed_caption.py
+++ b/arib/closed_caption.py
@@ -14,12 +14,14 @@
 
 from arib import read
 from arib.decoder import Decoder
-from arib.drcs_cache import DRCS_CACHE
-from arib.drcs_cache import DrcsGlyph
-from arib.drcs_cache import drcs_set_from_font_id_byte
-from arib.drcs_cache import normalize_94
-from arib.drcs_cache import is_94_byte
-from arib.drcs_cache import drcs0_pack
+from arib.drcs_cache import (
+    DRCS_CACHE,
+    DrcsGlyph,
+    drcs0_pack,
+    drcs_set_from_font_id_byte,
+    is_94_byte,
+    normalize_94,
+)
 
 DEBUG = False
 DRCS_DEBUG = False
diff --git a/arib/code_set.py b/arib/code_set.py
index 969d4eb..f3555ce 100644
--- a/arib/code_set.py
+++ b/arib/code_set.py
@@ -11,11 +11,9 @@
 
 """
 
-from arib.arib_exceptions import UnimplimentedError
 from arib import read
-from arib.drcs_cache import DRCS_CACHE
-from arib.drcs_cache import normalize_94
-from arib.drcs_cache import drcs0_pack
+from arib.arib_exceptions import UnimplimentedError
+from arib.drcs_cache import DRCS_CACHE, drcs0_pack, normalize_94
 
 DEBUG = False
 
diff --git a/arib/control_characters.py b/arib/control_characters.py
index e0fc320..a178106 100644
--- a/arib/control_characters.py
+++ b/arib/control_characters.py
@@ -9,9 +9,8 @@
 """
 
 from arib import read
-from arib.code_set import code_set_handler_from_final_byte
-from arib.code_set import in_code_set_table
 from arib.arib_exceptions import DecodingError
+from arib.code_set import code_set_handler_from_final_byte, in_code_set_table
 
 DEBUG = False
 
diff --git a/arib/data_group.py b/arib/data_group.py
index 9053b82..bee8570 100644
--- a/arib/data_group.py
+++ b/arib/data_group.py
@@ -11,12 +11,11 @@
 
 """
 import sys
-from arib import read
-from arib.read import EOFError
 import traceback
 
-from arib.closed_caption import CaptionStatementData
-from arib.closed_caption import CaptionManagementData
+from arib import read
+from arib.closed_caption import CaptionManagementData, CaptionStatementData
+from arib.read import EOFError
 
 DEBUG = False
 
diff --git a/arib/decoder.py b/arib/decoder.py
index 48172f1..18f7131 100644
--- a/arib/decoder.py
+++ b/arib/decoder.py
@@ -8,12 +8,10 @@
 
 """
 
-from arib import read
-from arib.control_characters import is_control_character
-from arib.control_characters import handle_control_character
 import arib.control_characters as control_char
-from arib import code_set
+from arib import code_set, read
 from arib.arib_exceptions import DecodingError
+from arib.control_characters import handle_control_character, is_control_character
 
 DEBUG = False
 
diff --git a/arib/drcs_cache.py b/arib/drcs_cache.py
index 07a5c86..cff7c82 100644
--- a/arib/drcs_cache.py
+++ b/arib/drcs_cache.py
@@ -1,7 +1,8 @@
-from dataclasses import dataclass
-from typing import Tuple, Optional
-from collections import OrderedDict
 import threading
+from collections import OrderedDict
+from dataclasses import dataclass
+from typing import Optional, Tuple
+
 from arib import read
 
 
diff --git a/arib/es_extract.py b/arib/es_extract.py
index 814cb6a..ae235fa 100755
--- a/arib/es_extract.py
+++ b/arib/es_extract.py
@@ -7,21 +7,17 @@
 DATE: Saturday January 14th 2017
 
 """
-import sys
 import argparse
+import sys
 import traceback
-
 from pathlib import Path
 
-
-from arib.closed_caption import next_data_unit
-from arib.closed_caption import StatementBody
 import arib.code_set as code_set
 import arib.control_characters as control_characters
-from arib.data_group import next_data_group
 
 # print out some additional info for DRCS values
-from arib.closed_caption import set_DRCS_debug
+from arib.closed_caption import StatementBody, next_data_unit, set_DRCS_debug
+from arib.data_group import next_data_group
 
 set_DRCS_debug(True)
 
diff --git a/arib/mpeg/ts.py b/arib/mpeg/ts.py
index 10a63b1..5c16714 100755
--- a/arib/mpeg/ts.py
+++ b/arib/mpeg/ts.py
@@ -7,13 +7,13 @@
 DATE: Thursday, October 20th 2016
 
 """
-import os
-import sys
 import argparse
-import struct
 
 # memorymap file on 64 bit systems
 import mmap
+import os
+import struct
+import sys
 
 
 class ES:
diff --git a/arib/srt.py b/arib/srt.py
index 48d3634..2d059cb 100644
--- a/arib/srt.py
+++ b/arib/srt.py
@@ -1,9 +1,9 @@
-from pathlib import Path
-from enum import Enum
-import sys
 import math
-from typing import Optional, Union, Callable, Dict, Any
 import re
+import sys
+from enum import Enum
+from pathlib import Path
+from typing import Any, Callable, Dict, Optional, Union
 
 import arib.code_set as code_set
 import arib.control_characters as control_characters
diff --git a/arib/ts2ass.py b/arib/ts2ass.py
index 7a664ca..5cfd44c 100755
--- a/arib/ts2ass.py
+++ b/arib/ts2ass.py
@@ -11,24 +11,19 @@
 
 from __future__ import annotations
 
-import sys
 import argparse
+import sys
 import traceback
 from dataclasses import dataclass
 from pathlib import Path
 from typing import Optional
 
-from arib.read import EOFError
-
-from arib.closed_caption import next_data_unit
-from arib.closed_caption import StatementBody
-from arib.data_group import DataGroup
 from arib.arib_exceptions import FileOpenError
-
-from arib.mpeg.ts import TS
-from arib.mpeg.ts import ES
-
 from arib.ass import ASSFormatter
+from arib.closed_caption import StatementBody, next_data_unit
+from arib.data_group import DataGroup
+from arib.mpeg.ts import ES, TS
+from arib.read import EOFError
 
 
 @dataclass(frozen=True)
diff --git a/arib/ts2srt.py b/arib/ts2srt.py
index 7ddbe53..df080ab 100755
--- a/arib/ts2srt.py
+++ b/arib/ts2srt.py
@@ -9,23 +9,18 @@
 
 from __future__ import annotations
 
-import sys
 import argparse
+import sys
 import traceback
 from dataclasses import dataclass
 from pathlib import Path
 from typing import Optional
 
-from arib.read import EOFError
-
-from arib.closed_caption import next_data_unit
-from arib.closed_caption import StatementBody
-from arib.data_group import DataGroup
 from arib.arib_exceptions import FileOpenError
-
-from arib.mpeg.ts import TS
-from arib.mpeg.ts import ES
-
+from arib.closed_caption import StatementBody, next_data_unit
+from arib.data_group import DataGroup
+from arib.mpeg.ts import ES, TS
+from arib.read import EOFError
 from arib.srt import SRTFormatter
 
 
@@ -128,7 +123,7 @@ def on_es_packet(self, current_pid, packet, header_size):
                     "Exception thrown while handling DataGroup in ES."
                     "This may be due to many factors "
                     "such as file corruption or the .ts file using"
-                    "as yet unsupported features."
+                    " as yet unsupported features."
                 )
                 traceback.print_exc(file=sys.stdout)
 
diff --git a/arib/ts_extract.py b/arib/ts_extract.py
index 84b42b1..a06094d 100755
--- a/arib/ts_extract.py
+++ b/arib/ts_extract.py
@@ -7,23 +7,19 @@
 DATE: Thursday, October 20th 2016
 
 """
+import argparse
 import os
 import sys
-import argparse
 import traceback
-from arib.read import EOFError
-
-from arib.mpeg.ts import TS
-from arib.mpeg.ts import ES
 
-from arib.closed_caption import next_data_unit
-from arib.closed_caption import StatementBody
 import arib.code_set as code_set
 import arib.control_characters as control_characters
-from arib.data_group import DataGroup
 
 # print out some additional info for DRCS values
-from arib.closed_caption import set_DRCS_debug
+from arib.closed_caption import StatementBody, next_data_unit, set_DRCS_debug
+from arib.data_group import DataGroup
+from arib.mpeg.ts import ES, TS
+from arib.read import EOFError
 
 set_DRCS_debug(True)
 
diff --git a/pyproject.toml b/pyproject.toml
index 9bc6fa7..8ff1fdf 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -61,5 +61,5 @@ line-length = 100
 target-version = "py310"
 
 [tool.ruff.lint]
-select = ["E", "F", "W"]   # pycodestyle/pyflakes/warnings
+select = ["E", "F", "W", "I"]   # pycodestyle/pyflakes/warnings
 ignore = []
\ No newline at end of file
diff --git a/tests/test_cli_es_extract.py b/tests/test_cli_es_extract.py
index f3864d5..151bcc3 100644
--- a/tests/test_cli_es_extract.py
+++ b/tests/test_cli_es_extract.py
@@ -1,5 +1,7 @@
 import sys
+
 import pytest
+
 import arib.es_extract as cli
 
 # List of input .es files to run the CLI against
diff --git a/tests/test_read.py b/tests/test_read.py
index 7f1a7e8..3fb990f 100644
--- a/tests/test_read.py
+++ b/tests/test_read.py
@@ -1,4 +1,5 @@
 import io
+
 import arib.read as read