diff --git a/media/forms.py b/media/forms.py
index 8dd1df2..c16cb92 100644
--- a/media/forms.py
+++ b/media/forms.py
@@ -43,6 +43,7 @@ class MediaAdminForm(ModelForm):
                   "&format=json&jscmd=data".format(isbn)
         with urllib.request.urlopen(api_url) as url:
             data = json.loads(url.read().decode())
+
         if data and data['ISBN:' + isbn]:
             data = data['ISBN:' + isbn]
             if 'url' in data:
@@ -52,19 +53,22 @@ class MediaAdminForm(ModelForm):
                     self.cleaned_data['title'] = data['title']
                 if 'subtitle' in data:
                     self.cleaned_data['subtitle'] = data['subtitle']
+
                 if 'number_of_pages' in data:
                     self.cleaned_data['number_of_pages'] = \
                         data['number_of_pages']
                 elif not self.cleaned_data['number_of_pages']:
                     self.cleaned_data['number_of_pages'] = 0
+
                 if 'publish_date' in data:
                     months = ['January', 'February', "March", "April", "Mai",
                               "June", "July", "August", "September",
-                              "October", "November","December"]
+                              "October", "November", "December"]
                     split = data['publish_date'].replace(',', '').split(' ')
                     self.cleaned_data['publish_date'] = "{}-{:02d}-{:02d}"\
-                        .format(split[2], months.index(split[0])+1,
+                        .format(split[2], months.index(split[0]) + 1,
                                 int(split[1]),)
+
                 if 'authors' in data:
                     if 'author' not in self.cleaned_data:
                         self.cleaned_data['authors'] = list()
@@ -99,8 +103,8 @@ class MediaAdminForm(ModelForm):
                         self.cleaned_data['title'].upper(), )
 
                     if self.cleaned_data['subtitle']:
-                        start = self.cleaned_data['subtitle'] \
-                                .split(' ')[0].replace('.', '')
+                        start = self.cleaned_data['subtitle'].split(' ')[0] \
+                            .replace('.', '')
 
                         if start.isnumeric():
                             side_identifier += " {:0>2}".format(start, )