diff --git a/ihatemoney/currency_convertor.py b/ihatemoney/currency_convertor.py
index efb34b8a..75fa8342 100644
--- a/ihatemoney/currency_convertor.py
+++ b/ihatemoney/currency_convertor.py
@@ -1,5 +1,5 @@
+from cachetools import TTLCache, cached
 import requests
-from cachetools import cached, TTLCache
 
 
 class Singleton(type):
diff --git a/ihatemoney/forms.py b/ihatemoney/forms.py
index 9277c92f..7a6a57e4 100644
--- a/ihatemoney/forms.py
+++ b/ihatemoney/forms.py
@@ -1,3 +1,4 @@
+import copy
 from datetime import datetime
 from re import match
 
@@ -5,15 +6,12 @@ import email_validator
 from flask import request
 from flask_babel import lazy_gettext as _
 from flask_wtf.file import FileAllowed, FileField, FileRequired
-import copy
-
 from flask_wtf.form import FlaskForm
 from jinja2 import Markup
 from werkzeug.security import check_password_hash, generate_password_hash
-from wtforms.fields.core import SelectField, SelectMultipleField
+from wtforms.fields.core import Label, SelectField, SelectMultipleField
 from wtforms.fields.html5 import DateField, DecimalField, URLField
 from wtforms.fields.simple import BooleanField, PasswordField, StringField, SubmitField
-from wtforms.fields.core import Label
 from wtforms.validators import (
     DataRequired,
     Email,
@@ -23,9 +21,9 @@ from wtforms.validators import (
     ValidationError,
 )
 
+from ihatemoney.currency_convertor import CurrencyConverter
 from ihatemoney.models import LoggingMode, Person, Project
 from ihatemoney.utils import eval_arithmetic_expression, slugify
-from ihatemoney.currency_convertor import CurrencyConverter
 
 
 def strip_filter(string):
diff --git a/ihatemoney/tests/tests.py b/ihatemoney/tests/tests.py
index b7f4d12b..fb314bfc 100644
--- a/ihatemoney/tests/tests.py
+++ b/ihatemoney/tests/tests.py
@@ -6,7 +6,7 @@ import json
 import os
 from time import sleep
 import unittest
-from unittest.mock import patch, MagicMock
+from unittest.mock import MagicMock, patch
 
 from flask import session
 from flask_testing import TestCase
@@ -14,8 +14,8 @@ from sqlalchemy import orm
 from werkzeug.security import check_password_hash, generate_password_hash
 
 from ihatemoney import history, models, utils
-from ihatemoney.manage import DeleteProject, GenerateConfig, GeneratePasswordHash
 from ihatemoney.currency_convertor import CurrencyConverter
+from ihatemoney.manage import DeleteProject, GenerateConfig, GeneratePasswordHash
 from ihatemoney.run import create_app, db, load_configuration
 from ihatemoney.versioning import LoggingMode