diff --git a/pvoutput/__init__.py b/pvoutput/__init__.py
index b060ca1..ea08fe3 100644
--- a/pvoutput/__init__.py
+++ b/pvoutput/__init__.py
@@ -1,4 +1,5 @@
 """ Init PVoutput library"""
+
 from .pvoutput import *  # noqa
 
 __version__ = 0.1
diff --git a/pvoutput/consts.py b/pvoutput/consts.py
index 9a251ed..082ebe6 100644
--- a/pvoutput/consts.py
+++ b/pvoutput/consts.py
@@ -1,4 +1,5 @@
 """ Constants used in this repo """
+
 import os
 from datetime import timedelta
 from urllib.parse import urljoin
diff --git a/pvoutput/daterange.py b/pvoutput/daterange.py
index af42763..ac4ab07 100644
--- a/pvoutput/daterange.py
+++ b/pvoutput/daterange.py
@@ -1,4 +1,5 @@
 """Date Range Class """
+
 from dataclasses import dataclass
 from datetime import date, datetime, timedelta
 from typing import Iterable, List, Union
diff --git a/pvoutput/exceptions.py b/pvoutput/exceptions.py
index bd0598e..e1bf3ee 100644
--- a/pvoutput/exceptions.py
+++ b/pvoutput/exceptions.py
@@ -1,4 +1,5 @@
 """ Custom Exeception classes """
+
 import requests
 
 
diff --git a/pvoutput/grid_search/__init__.py b/pvoutput/grid_search/__init__.py
index 14f0e09..a0150a9 100644
--- a/pvoutput/grid_search/__init__.py
+++ b/pvoutput/grid_search/__init__.py
@@ -1,2 +1,3 @@
 """ Init for grid saerch module """
+
 from .grid_search import GridSearch
diff --git a/pvoutput/grid_search/app.py b/pvoutput/grid_search/app.py
index 2a63c8f..11a81d9 100644
--- a/pvoutput/grid_search/app.py
+++ b/pvoutput/grid_search/app.py
@@ -10,6 +10,7 @@
 - Jamie Taylor <jamie.taylor@sheffield.ac.uk>
 - First Authored: 2021-11-16
 """
+
 import argparse
 import logging
 import os
diff --git a/pvoutput/grid_search/clip.py b/pvoutput/grid_search/clip.py
index 0f3ba95..60007fd 100644
--- a/pvoutput/grid_search/clip.py
+++ b/pvoutput/grid_search/clip.py
@@ -1,4 +1,5 @@
 """Clipping function for coordinates"""
+
 from typing import Iterable, Optional, Tuple, Union
 
 import geopandas as gpd
diff --git a/pvoutput/grid_search/natural_earth.py b/pvoutput/grid_search/natural_earth.py
index 729c62c..6b10b70 100644
--- a/pvoutput/grid_search/natural_earth.py
+++ b/pvoutput/grid_search/natural_earth.py
@@ -1,4 +1,5 @@
 """Retrieve Natural Earth world boundaries."""
+
 import logging
 import os
 from io import BytesIO
diff --git a/pvoutput/mapscraper.py b/pvoutput/mapscraper.py
index c64f1f1..194972d 100644
--- a/pvoutput/mapscraper.py
+++ b/pvoutput/mapscraper.py
@@ -1,4 +1,5 @@
 """ Code for scraping for pv systems """
+
 import re
 from copy import copy
 from typing import Iterable, Optional, Union
diff --git a/pvoutput/prcoess.py b/pvoutput/prcoess.py
index 435a96f..3260ce1 100644
--- a/pvoutput/prcoess.py
+++ b/pvoutput/prcoess.py
@@ -1,4 +1,5 @@
 """ Function to process data """
+
 import logging
 from io import StringIO
 
diff --git a/pvoutput/pvoutput.py b/pvoutput/pvoutput.py
index 0e4ea35..916ab0b 100644
--- a/pvoutput/pvoutput.py
+++ b/pvoutput/pvoutput.py
@@ -1,4 +1,5 @@
 """ Main PV Output class to get data from pvoutput.org """
+
 import logging
 import os
 import time
@@ -924,7 +925,7 @@ def _download_multiple_worker(
                     )
             else:
                 total_rows += len(timeseries)
-                _LOG.info(f'Adding timezone {timezone} to {total_rows} rows')
+                _LOG.info(f"Adding timezone {timezone} to {total_rows} rows")
                 timeseries = timeseries.tz_localize(timezone)
                 _LOG.info(
                     "system_id: %d: %d rows retrieved: %s to %s",
diff --git a/pvoutput/utils.py b/pvoutput/utils.py
index 0ac51fe..0db6e0d 100644
--- a/pvoutput/utils.py
+++ b/pvoutput/utils.py
@@ -1,4 +1,5 @@
 """ Util functions"""
+
 import logging
 import os
 import sys
diff --git a/scripts/scrape_country_codes.py b/scripts/scrape_country_codes.py
index 5dd3ec2..910f378 100644
--- a/scripts/scrape_country_codes.py
+++ b/scripts/scrape_country_codes.py
@@ -3,6 +3,7 @@
 Prints and saves a dictionary mapping the country names to
 their codes.
 """
+
 import json
 
 import urllib3