diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 45d6236f..3ca2dc42 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -25,10 +25,12 @@ repos:
     rev: 3.8.1
     hooks:
       - id: flake8
+        args:
+          - --ignore=D100,D101,D102,D103,D104,D105,D107,E501,W503
         additional_dependencies:
           - flake8-docstrings==1.5.0
           - pydocstyle==5.0.2
-        files: ^(homeassistant|script|tests)/.+\.py$
+        files: ^(custom_components|script|tests)/.+\.py$
   - repo: https://github.com/PyCQA/bandit
     rev: 1.6.2
     hooks:
diff --git a/custom_components/waste_collection_schedule/__init__.py b/custom_components/waste_collection_schedule/__init__.py
index 6c585f6d..c4c51ce8 100644
--- a/custom_components/waste_collection_schedule/__init__.py
+++ b/custom_components/waste_collection_schedule/__init__.py
@@ -1,5 +1,4 @@
 """Waste Collection Schedule Component."""
-import asyncio
 import logging
 from random import randrange
 
@@ -68,7 +67,6 @@ CONFIG_SCHEMA = vol.Schema(
 
 async def async_setup(hass: HomeAssistant, config: dict):
     """Set up the component. config contains data from configuration.yaml."""
-
     # create empty api object as singleton
     api = WasteCollectionApi(
         hass,
diff --git a/custom_components/waste_collection_schedule/package/scraper.py b/custom_components/waste_collection_schedule/package/scraper.py
index d7745536..3a5e4a89 100644
--- a/custom_components/waste_collection_schedule/package/scraper.py
+++ b/custom_components/waste_collection_schedule/package/scraper.py
@@ -1,12 +1,10 @@
 #!/usr/bin/python3
 
-import collections
 import datetime
 import importlib
 import itertools
 import logging
 import os
-from itertools import islice
 from typing import Dict, List
 
 from .helpers import CollectionAppointment, CollectionAppointmentGroup
@@ -113,7 +111,7 @@ class Scraper:
 
     def get_upcoming(self, count=None, leadtime=None, types=None, include_today=False):
         """Return list of all entries, limited by count and/or leadtime.
-        
+
         Keyword arguments:
         count -- limits the number of returned entries (default=10)
         leadtime -- limits the timespan in days of returned entries (default=7, 0 = today)
diff --git a/custom_components/waste_collection_schedule/package/service/AbfallnaviDe.py b/custom_components/waste_collection_schedule/package/service/AbfallnaviDe.py
index 748bf880..c34796dc 100644
--- a/custom_components/waste_collection_schedule/package/service/AbfallnaviDe.py
+++ b/custom_components/waste_collection_schedule/package/service/AbfallnaviDe.py
@@ -115,7 +115,7 @@ class AbfallnaviDe:
         return self._get_dates("hausnummern", house_number_id, waste_types=None)
 
     def get_dates(self, city, street, house_number=None):
-        """Convenient function to get dates by strings only."""
+        """Get dates by strings only for convenience."""
         # find city_id
         city_id = self.get_city_id(city)
         if city_id is None:
diff --git a/custom_components/waste_collection_schedule/package/source/abfall_io.py b/custom_components/waste_collection_schedule/package/source/abfall_io.py
index 186ff307..9ad5ee38 100644
--- a/custom_components/waste_collection_schedule/package/source/abfall_io.py
+++ b/custom_components/waste_collection_schedule/package/source/abfall_io.py
@@ -74,7 +74,7 @@ class Source:
 
         # get csv file
         r = requests.post(
-            f"https://api.abfall.io", params=params, data=args, headers=HEADERS
+            "https://api.abfall.io", params=params, data=args, headers=HEADERS
         )
 
         # prepare csv reader
diff --git a/custom_components/waste_collection_schedule/package/source/abfall_zollernalbkreis_de.py b/custom_components/waste_collection_schedule/package/source/abfall_zollernalbkreis_de.py
index 58e26871..51741ed7 100644
--- a/custom_components/waste_collection_schedule/package/source/abfall_zollernalbkreis_de.py
+++ b/custom_components/waste_collection_schedule/package/source/abfall_zollernalbkreis_de.py
@@ -1,4 +1,4 @@
-from datetime import date, datetime
+from datetime import datetime
 
 import requests
 
@@ -76,7 +76,7 @@ class Source:
         }
 
         # get ics file
-        r = requests.get(f"https://www.abfallkalender-zak.de", params=args,)
+        r = requests.get("https://www.abfallkalender-zak.de", params=args,)
 
         # parse ics file
         dates = self._ics.convert(r.text)
diff --git a/custom_components/waste_collection_schedule/package/source/awbkoeln_de.py b/custom_components/waste_collection_schedule/package/source/awbkoeln_de.py
index 9410cb36..0e6a8393 100644
--- a/custom_components/waste_collection_schedule/package/source/awbkoeln_de.py
+++ b/custom_components/waste_collection_schedule/package/source/awbkoeln_de.py
@@ -28,7 +28,7 @@ class Source:
         args["end_month"] = now.month
 
         # get json file
-        r = requests.get(f"https://www.awbkoeln.de/api/calendar", params=args)
+        r = requests.get("https://www.awbkoeln.de/api/calendar", params=args)
 
         data = json.loads(r.text)
 
diff --git a/custom_components/waste_collection_schedule/package/source/bsr_de.py b/custom_components/waste_collection_schedule/package/source/bsr_de.py
index 4b680c05..877df08d 100644
--- a/custom_components/waste_collection_schedule/package/source/bsr_de.py
+++ b/custom_components/waste_collection_schedule/package/source/bsr_de.py
@@ -1,4 +1,3 @@
-import datetime
 import urllib.parse
 
 import requests
diff --git a/custom_components/waste_collection_schedule/package/source/muellmax_de.py b/custom_components/waste_collection_schedule/package/source/muellmax_de.py
index 594d1e69..f1f3fdc7 100644
--- a/custom_components/waste_collection_schedule/package/source/muellmax_de.py
+++ b/custom_components/waste_collection_schedule/package/source/muellmax_de.py
@@ -1,4 +1,3 @@
-import datetime
 from html.parser import HTMLParser
 
 import requests
diff --git a/custom_components/waste_collection_schedule/package/source/stadtreinigung_hamburg.py b/custom_components/waste_collection_schedule/package/source/stadtreinigung_hamburg.py
index f5229158..da73e3de 100644
--- a/custom_components/waste_collection_schedule/package/source/stadtreinigung_hamburg.py
+++ b/custom_components/waste_collection_schedule/package/source/stadtreinigung_hamburg.py
@@ -21,7 +21,7 @@ class Source:
 
         # get ics file
         r = requests.post(
-            f"https://www.stadtreinigung.hamburg/privatkunden/abfuhrkalender/Abfuhrtermin.ics",
+            "https://www.stadtreinigung.hamburg/privatkunden/abfuhrkalender/Abfuhrtermin.ics",
             data=args,
         )
 
diff --git a/custom_components/waste_collection_schedule/package/wizard/abfall_io.py b/custom_components/waste_collection_schedule/package/wizard/abfall_io.py
index 1583306e..6749d8a9 100755
--- a/custom_components/waste_collection_schedule/package/wizard/abfall_io.py
+++ b/custom_components/waste_collection_schedule/package/wizard/abfall_io.py
@@ -8,8 +8,10 @@ import requests
 MODUS_KEY = "d6c5855a62cf32a4dadbc2831f0f295f"
 HEADERS = {"user-agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64)"}
 
-# Parser for HTML option list
+
 class OptionParser(HTMLParser):
+    """Parser for HTML option list."""
+
     def __init__(self):
         super().__init__()
         self._within_option = False
@@ -76,7 +78,7 @@ def select_and_query(data, answers):
 
     args = {"key": answers["key"], "modus": MODUS_KEY, "waction": parser.waction}
     r = requests.post(
-        f"https://api.abfall.io", params=args, data=answers, headers=HEADERS
+        "https://api.abfall.io", params=args, data=answers, headers=HEADERS
     )
     return r.text
 
@@ -104,7 +106,7 @@ def main():
 
     # prompt for first level
     args = {"key": answers["key"], "modus": MODUS_KEY, "waction": "init"}
-    r = requests.get(f"https://api.abfall.io", params=args, headers=HEADERS)
+    r = requests.get("https://api.abfall.io", params=args, headers=HEADERS)
 
     data = r.text
     while True:
diff --git a/custom_components/waste_collection_schedule/package/wizard/abfallnavi_de.py b/custom_components/waste_collection_schedule/package/wizard/abfallnavi_de.py
index 4150533d..638da415 100755
--- a/custom_components/waste_collection_schedule/package/wizard/abfallnavi_de.py
+++ b/custom_components/waste_collection_schedule/package/wizard/abfallnavi_de.py
@@ -1,11 +1,9 @@
 #!/usr/bin/python3
 
-import json
 import os
 import sys
 
 import inquirer
-import requests
 
 PACKAGE_PARENT = ".."
 SCRIPT_DIR = os.path.dirname(
@@ -40,8 +38,6 @@ def main():
     # create service
     api = AbfallnaviDe(service_id)
 
-    SERVICE_URL = f"https://{service_id}-abfallapp.regioit.de/abfall-app-{service_id}"
-
     # select city
     cities = api.get_cities()
     questions = [
diff --git a/custom_components/waste_collection_schedule/package/wizard/awbkoeln_de.py b/custom_components/waste_collection_schedule/package/wizard/awbkoeln_de.py
index cb1c8125..7ab572e6 100755
--- a/custom_components/waste_collection_schedule/package/wizard/awbkoeln_de.py
+++ b/custom_components/waste_collection_schedule/package/wizard/awbkoeln_de.py
@@ -17,7 +17,7 @@ def main():
 
     args = answers
     args["form"] = "json"
-    r = requests.get(f"https://www.awbkoeln.de/api/streets", params=args)
+    r = requests.get("https://www.awbkoeln.de/api/streets", params=args)
 
     # "data":[{"street_name":"Bahnhofplatz","building_number":"5","building_number_plain":"5","building_number_addition":"","street_code":"4270",
     # "district":"Gremberghoven","zipcode":"51149","district_code":"4","area_code":"7","user_street_name":"Bahnhofplatz","user_building_number":"1"}
diff --git a/custom_components/waste_collection_schedule/package/wizard/muellmax_de.py b/custom_components/waste_collection_schedule/package/wizard/muellmax_de.py
index 725fe71a..aba5f721 100755
--- a/custom_components/waste_collection_schedule/package/wizard/muellmax_de.py
+++ b/custom_components/waste_collection_schedule/package/wizard/muellmax_de.py
@@ -1,6 +1,5 @@
 #!/usr/bin/python3
 
-import json
 from html.parser import HTMLParser
 
 import inquirer
diff --git a/custom_components/waste_collection_schedule/package/wizard/stadtreinigung_hamburg.py b/custom_components/waste_collection_schedule/package/wizard/stadtreinigung_hamburg.py
index 183d1f21..262736d1 100755
--- a/custom_components/waste_collection_schedule/package/wizard/stadtreinigung_hamburg.py
+++ b/custom_components/waste_collection_schedule/package/wizard/stadtreinigung_hamburg.py
@@ -1,6 +1,5 @@
 #!/usr/bin/python3
 
-import json
 from html.parser import HTMLParser
 
 import inquirer
diff --git a/custom_components/waste_collection_schedule/package/wizard/stuttgart_de.py b/custom_components/waste_collection_schedule/package/wizard/stuttgart_de.py
index 072cc741..7d478331 100755
--- a/custom_components/waste_collection_schedule/package/wizard/stuttgart_de.py
+++ b/custom_components/waste_collection_schedule/package/wizard/stuttgart_de.py
@@ -1,7 +1,6 @@
 #!/usr/bin/python3
 
 import json
-from html.parser import HTMLParser
 
 import inquirer
 import requests
diff --git a/custom_components/waste_collection_schedule/sensor.py b/custom_components/waste_collection_schedule/sensor.py
index 3384d5e4..76b60778 100644
--- a/custom_components/waste_collection_schedule/sensor.py
+++ b/custom_components/waste_collection_schedule/sensor.py
@@ -24,8 +24,10 @@ CONF_LEADTIME = "leadtime"
 CONF_DATE_TEMPLATE = "date_template"
 CONF_APPOINTMENT_TYPES = "types"
 
-# values for CONF_DETAILS_FORMAT
+
 class DetailsFormat(Enum):
+    """Values for CONF_DETAILS_FORMAT."""
+
     upcoming = "upcoming"  # list of "<date> <type1, type2, ...>"
     appointment_types = "appointment_types"  # list of "<type> <date>"
     generic = "generic"  # all values in separate attributes
@@ -135,7 +137,7 @@ class ScheduleSensor(Entity):
         return self._attributes
 
     async def async_added_to_hass(self):
-        """Called if entity has been added to hass."""
+        """Entities have been added to hass."""
         self._update_sensor()
 
     @property
diff --git a/custom_components/waste_collection_schedule/test_sources.py b/custom_components/waste_collection_schedule/test_sources.py
index 99befa37..c491467a 100755
--- a/custom_components/waste_collection_schedule/test_sources.py
+++ b/custom_components/waste_collection_schedule/test_sources.py
@@ -2,7 +2,6 @@
 
 import argparse
 import importlib
-import os
 import pathlib