[autopep8] Fix coding style.

biscuit/apps/exlibris/migrations/0001_initial.py

@@ -18,14 +18,18 @@ class Migration(migrations.Migration):
         migrations.CreateModel(
             name='Book',
             fields=[
-                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('id', models.AutoField(auto_created=True,
+                                        primary_key=True, serialize=False, verbose_name='ID')),
                 ('title', models.CharField(max_length=50, verbose_name='Book title')),
                 ('author', models.CharField(blank=True, max_length=50, verbose_name='Author name')),
                 ('publisher', models.CharField(blank=True, max_length=50, verbose_name='Publishing company')),
-                ('edition', models.PositiveSmallIntegerField(null=True, verbose_name='Number of edition')),
+                ('edition', models.PositiveSmallIntegerField(
+                    null=True, verbose_name='Number of edition')),
                 ('year', models.PositiveSmallIntegerField(null=True, verbose_name='Publishing year')),
-                ('isbn', isbn_field.fields.ISBNField(max_length=28, unique=True, validators=[isbn_field.validators.ISBNValidator], verbose_name='ISBN number')),
-                ('cover', models.ImageField(blank=True, null=True, upload_to='', verbose_name='Photo of cover')),
+                ('isbn', isbn_field.fields.ISBNField(max_length=28, unique=True, validators=[
+                 isbn_field.validators.ISBNValidator], verbose_name='ISBN number')),
+                ('cover', models.ImageField(blank=True, null=True,
+                                            upload_to='', verbose_name='Photo of cover')),
             ],
             options={
                 'unique_together': {('title', 'author', 'edition', 'year')},
@@ -34,10 +38,13 @@ class Migration(migrations.Migration):
         migrations.CreateModel(
             name='BookCopy',
             fields=[
-                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('id', models.AutoField(auto_created=True,
+                                        primary_key=True, serialize=False, verbose_name='ID')),
                 ('barcode', models.CharField(max_length=20, unique=True, verbose_name='Barcode')),
-                ('book', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, related_name='copies', to='exlibris.Book')),
-                ('borrower', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, related_name='books', to='core.Person')),
+                ('book', models.ForeignKey(blank=True, null=True,
+                                           on_delete=django.db.models.deletion.CASCADE, related_name='copies', to='exlibris.Book')),
+                ('borrower', models.ForeignKey(blank=True, null=True,
+                                               on_delete=django.db.models.deletion.CASCADE, related_name='books', to='core.Person')),
             ],
         ),
     ]

biscuit/apps/exlibris/migrations/0002_add_blank_option.py

@@ -13,11 +13,13 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='book',
             name='edition',
-            field=models.PositiveSmallIntegerField(blank=True, null=True, verbose_name='Number of edition'),
+            field=models.PositiveSmallIntegerField(
+                blank=True, null=True, verbose_name='Number of edition'),
         ),
         migrations.AlterField(
             model_name='book',
             name='year',
-            field=models.PositiveSmallIntegerField(blank=True, null=True, verbose_name='Publishing year'),
+            field=models.PositiveSmallIntegerField(
+                blank=True, null=True, verbose_name='Publishing year'),
         ),
     ]

biscuit/apps/exlibris/migrations/0003_book_copy_condition.py

@@ -18,7 +18,8 @@ class Migration(migrations.Migration):
         migrations.AddField(
             model_name='bookcopy',
             name='condition',
-            field=models.CharField(blank=True, choices=[('U', 'New, unused'), ('N', 'New, used'), ('S', 'Slightly worn'), ('H', 'Heavily worn')], max_length=1, verbose_name='Condition'),
+            field=models.CharField(blank=True, choices=[('U', 'New, unused'), ('N', 'New, used'), (
+                'S', 'Slightly worn'), ('H', 'Heavily worn')], max_length=1, verbose_name='Condition'),
         ),
         migrations.AddField(
             model_name='bookcopy',

biscuit/apps/exlibris/migrations/0004_copy_num.py

@@ -13,6 +13,7 @@ class Migration(migrations.Migration):
         migrations.AddField(
             model_name='bookcopy',
             name='copy_num',
-            field=models.PositiveSmallIntegerField(blank=True, null=True, verbose_name='Current number of copy'),
+            field=models.PositiveSmallIntegerField(
+                blank=True, null=True, verbose_name='Current number of copy'),
         ),
     ]

biscuit/apps/exlibris/migrations/0005_borrow_count_positive.py

@@ -13,6 +13,7 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='bookcopy',
             name='borrow_count',
-            field=models.PositiveSmallIntegerField(blank=True, null=True, verbose_name='Number of borrowings'),
+            field=models.PositiveSmallIntegerField(
+                blank=True, null=True, verbose_name='Number of borrowings'),
         ),
     ]

biscuit/apps/exlibris/views.py

@@ -270,14 +270,16 @@ def person_borrow(request: HttpRequest) -> HttpResponse:
                 try:
                     book_copy = BookCopy.objects.get(barcode=barcode)
                 except BookCopy.DoesNotExist:
-                    messages.error(request, _('Barcode %(barcode)s is invalid.') % {'barcode': barcode})
+                    messages.error(request, _('Barcode %(barcode)s is invalid.') %
+                                   {'barcode': barcode})
                     continue
 
                 book_copy.borrower = person
                 book_copy.borrow_count = book_copy.borrow_count + 1
                 book_copy.save()
 
-                messages.success(request, _('Book %(title)s borrowed to %(person)s.') % {'title': book_copy.book.title, 'person': person})
+                messages.success(request, _('Book %(title)s borrowed to %(person)s.') %
+                                 {'title': book_copy.book.title, 'person': person})
 
             person_borrow_form = PersonBorrowForm()