diff --git a/ihatemoney/forms.py b/ihatemoney/forms.py
index 7f34e56e..57f809df 100644
--- a/ihatemoney/forms.py
+++ b/ihatemoney/forms.py
@@ -22,7 +22,8 @@ from jinja2 import Markup
 import email_validator
 
 from ihatemoney.models import Project, Person
-from ihatemoney.utils import slugify, eval_arithmetic_expression,CurrencyConverter
+from ihatemoney.utils import slugify, eval_arithmetic_expression, CurrencyConverter
+
 
 def strip_filter(string):
     try:
@@ -39,7 +40,9 @@ def get_billform_for(project, set_default=True, **kwargs):
 
     """
     form = BillForm(**kwargs)
-    form.original_currency.label = Label("original_currency", "Currency (Default: %s)" % (project.default_currency))
+    form.original_currency.label = Label(
+        "original_currency", "Currency (Default: %s)" % (project.default_currency)
+    )
     active_members = [(m.id, m.name) for m in project.active_members]
 
     form.payed_for.choices = form.payer.choices = active_members
@@ -90,7 +93,9 @@ class EditProjectForm(FlaskForm):
     contact_email = StringField(_("Email"), validators=[DataRequired(), Email()])
     currency_helper = CurrencyConverter()
     default_currency = SelectField(
-        _("Default Currency"), choices=currency_helper.get_currencies(), validators=[DataRequired()]
+        _("Default Currency"),
+        choices=currency_helper.get_currencies(),
+        validators=[DataRequired()],
     )
 
     def save(self):
@@ -103,7 +108,7 @@ class EditProjectForm(FlaskForm):
             id=self.id.data,
             password=generate_password_hash(self.password.data),
             contact_email=self.contact_email.data,
-            default_currency=self.default_currency.data
+            default_currency=self.default_currency.data,
         )
         return project
 
@@ -172,7 +177,9 @@ class BillForm(FlaskForm):
     amount = CalculatorStringField(_("Amount paid"), validators=[DataRequired()])
     currency_helper = CurrencyConverter()
     original_currency = SelectField(
-        _("Currency"), choices=currency_helper.get_currencies(), validators=[DataRequired()]
+        _("Currency"),
+        choices=currency_helper.get_currencies(),
+        validators=[DataRequired()],
     )
     external_link = URLField(
         _("External link"),
@@ -193,7 +200,9 @@ class BillForm(FlaskForm):
         bill.date = self.date.data
         bill.owers = [Person.query.get(ower, project) for ower in self.payed_for.data]
         bill.original_currency = self.original_currency.data
-        bill.original_amount = self.currency_helper.exchange_currency(float(bill.amount), bill.original_currency, project.default_currency)
+        bill.original_amount = self.currency_helper.exchange_currency(
+            float(bill.amount), bill.original_currency, project.default_currency
+        )
 
         return bill
 
diff --git a/ihatemoney/models.py b/ihatemoney/models.py
index 5cbc974d..0f4c19de 100644
--- a/ihatemoney/models.py
+++ b/ihatemoney/models.py
@@ -379,7 +379,6 @@ class Bill(db.Model):
             "external_link": self.external_link,
             "original_currency": self.original_currency,
             "original_amount": self.original_amount,
-
         }
 
     def pay_each(self):
diff --git a/ihatemoney/utils.py b/ihatemoney/utils.py
index 4df76358..5c911eb7 100644
--- a/ihatemoney/utils.py
+++ b/ihatemoney/utils.py
@@ -14,26 +14,28 @@ from datetime import datetime, timedelta
 import csv
 import requests
 
+
 class CurrencyConverter(object):
-    api_url = 'https://api.exchangerate-api.com/v4/latest/USD'
+    api_url = "https://api.exchangerate-api.com/v4/latest/USD"
     response = []
 
     def __init__(self):
-        self.response = requests.get(self.api_url).json();
-    
+        self.response = requests.get(self.api_url).json()
+
     def get_currencies(self):
         currencies = []
         for rate in self.response["rates"]:
-            currencies.append((rate,rate))
+            currencies.append((rate, rate))
         return currencies
-    
-    def exchange_currency(self,amount,currency1,currency2):
+
+    def exchange_currency(self, amount, currency1, currency2):
         base = self.response["base"]
         conversion_rate1 = self.response["rates"][currency1]
         conversion_rate2 = self.response["rates"][currency2]
         new_amount = (amount / conversion_rate1) * conversion_rate2
         # round to two digits because we are dealing with money
-        return round(new_amount,2)
+        return round(new_amount, 2)
+
 
 def slugify(value):
     """Normalizes string, converts to lowercase, removes non-alpha characters,
diff --git a/ihatemoney/web.py b/ihatemoney/web.py
index eb61ae66..5a1ecd72 100644
--- a/ihatemoney/web.py
+++ b/ihatemoney/web.py
@@ -317,9 +317,7 @@ def create_project():
             )
             return redirect(url_for(".list_bills", project_id=project.id))
 
-    return render_template(
-        "create_project.html", form=form,
-    )
+    return render_template("create_project.html", form=form,)
 
 
 @main.route("/password-reminder", methods=["GET", "POST"])
@@ -391,9 +389,7 @@ def edit_project():
         edit_form.contact_email.data = g.project.contact_email
 
     return render_template(
-        "edit_project.html",
-        edit_form=edit_form,
-        current_view="edit_project",
+        "edit_project.html", edit_form=edit_form, current_view="edit_project",
     )