Fixes flake8 snafus

registrasion/contrib/mail.py

@@ -58,6 +58,12 @@ def __send_email__(template_prefix, to, kind, **kwargs):
     except AttributeError:
         bcc_email = None
 
-    email = EmailMultiAlternatives(subject, message_plaintext, from_email, to, bcc=bcc_email)
+    email = EmailMultiAlternatives(
+        subject,
+        message_plaintext,
+        from_email,
+        to,
+        bcc=bcc_email,
+    )
     email.attach_alternative(message_html, "text/html")
     email.send()

registrasion/controllers/cart.py

@@ -1,5 +1,10 @@
+from .batch import BatchController
+from .category import CategoryController
+from .discount import DiscountController
+from .flag import FlagController
+from .product import ProductController
+
 import collections
-import contextlib
 import datetime
 import functools
 import itertools
@@ -16,12 +21,6 @@ from registrasion.models import commerce
 from registrasion.models import conditions
 from registrasion.models import inventory
 
-from.batch import BatchController
-from .category import CategoryController
-from .discount import DiscountController
-from .flag import FlagController
-from .product import ProductController
-
 
 def _modifies_cart(func):
     ''' Decorator that makes the wrapped function raise ValidationError
@@ -94,11 +93,10 @@ class CartController(object):
         self.cart.time_last_updated = timezone.now()
         self.cart.reservation_duration = max(reservations)
 
-
     def end_batch(self):
         ''' Calls ``_end_batch`` if a modification has been performed in the
         previous batch. '''
-        if hasattr(self,'_modified_by_batch'):
+        if hasattr(self, '_modified_by_batch'):
             self._end_batch()
 
     def _end_batch(self):

registrasion/controllers/category.py

@@ -9,6 +9,7 @@ from django.db.models import Value
 
 from .batch import BatchController
 
+
 class AllProducts(object):
     pass
 

registrasion/controllers/discount.py

@@ -12,6 +12,7 @@ from django.db.models import Sum
 from django.db.models import Value
 from django.db.models import When
 
+
 class DiscountAndQuantity(object):
     ''' Represents a discount that can be applied to a product or category
     for a given user.

registrasion/controllers/flag.py

@@ -1,5 +1,4 @@
 import itertools
-import operator
 
 from collections import defaultdict
 from collections import namedtuple

registrasion/forms.py

@@ -2,7 +2,6 @@ from registrasion.models import commerce
 from registrasion.models import inventory
 
 from django import forms
-from django.core.exceptions import ValidationError
 
 
 class ApplyCreditNoteForm(forms.Form):
@@ -54,10 +53,11 @@ def ProductsForm(category, products):
     type. '''
 
     # Each Category.RENDER_TYPE value has a subclass here.
+    cat = inventory.Category
     RENDER_TYPES = {
-        inventory.Category.RENDER_TYPE_QUANTITY: _QuantityBoxProductsForm,
+        cat.RENDER_TYPE_QUANTITY: _QuantityBoxProductsForm,
-        inventory.Category.RENDER_TYPE_RADIO: _RadioButtonProductsForm,
+        cat.RENDER_TYPE_RADIO: _RadioButtonProductsForm,
-        inventory.Category.RENDER_TYPE_ITEM_QUANTITY: _ItemQuantityProductsForm,
+        cat.RENDER_TYPE_ITEM_QUANTITY: _ItemQuantityProductsForm,
     }
 
     # Produce a subclass of _ProductsForm which we can alter the base_fields on
@@ -211,13 +211,15 @@ class _RadioButtonProductsForm(_ProductsForm):
             )
 
     def add_product_error(self, product, error):
-        self.add_error(cls.FIELD, error)
+        self.add_error(self.FIELD, error)
+
 
 class _ItemQuantityProductsForm(_ProductsForm):
     ''' Products entry form that allows users to select a product type, and
      enter a quantity of that product. This version _only_ allows a single
-     product type to be purchased. This form is usually used in concert with the
+     product type to be purchased. This form is usually used in concert with
-     _ItemQuantityProductsFormSet to allow selection of multiple products.'''
+     the _ItemQuantityProductsFormSet to allow selection of multiple
+     products.'''
 
     CHOICE_FIELD = "choice"
     QUANTITY_FIELD = "quantity"

registrasion/tests/patches.py

@@ -2,6 +2,7 @@ from django.utils import timezone
 
 from registrasion.contrib import mail
 
+
 class SetTimeMixin(object):
     ''' Patches timezone.now() for the duration of a test case. Allows us to
     test time-based conditions (ceilings etc) relatively easily. '''

registrasion/tests/test_batch.py

@@ -1,16 +1,8 @@
-import datetime
 import pytz
 
-from django.core.exceptions import ValidationError
-
-from controller_helpers import TestingCartController
 from test_cart import RegistrationCartTestCase
 
 from registrasion.controllers.batch import BatchController
-from registrasion.controllers.discount import DiscountController
-from registrasion.controllers.product import ProductController
-from registrasion.models import commerce
-from registrasion.models import conditions
 
 UTC = pytz.timezone('UTC')
 
@@ -124,6 +116,7 @@ class BatchTestCase(RegistrationCartTestCase):
     def test_batch_end_functionality_is_called(self):
         class Ender(object):
             end_count = 0
+
             def end_batch(self):
                 self.end_count += 1
 

registrasion/tests/test_cart.py

@@ -375,7 +375,7 @@ class BasicCartTests(RegistrationCartTestCase):
 
         with BatchController.batch(self.USER_1):
             # Memoise the cart
-            same_cart = TestingCartController.for_user(self.USER_1)
+            TestingCartController.for_user(self.USER_1)
             # Do nothing on exit
 
         rev_1 = self.reget(cart.cart).revision

registrasion/urls.py

@@ -1,4 +1,3 @@
-import views
 from reporting import views as reporting_views
 
 from django.conf.urls import include
@@ -38,7 +37,11 @@ public = [
 
 reports = [
     url(r"^$", reporting_views.reports_list, name="reports_list"),
-    url(r"^credit_notes/?$", reporting_views.credit_notes, name="credit_notes"),
+    url(
+        r"^credit_notes/?$",
+        reporting_views.credit_notes,
+        name="credit_notes"
+    ),
     url(
         r"^product_status/?$",
         reporting_views.product_status,

registrasion/views.py

@@ -355,7 +355,10 @@ def product_category(request, category_id):
         if not products:
             messages.warning(
                 request,
-                "There are no products available from category: " + category.name,
+                (
+                    "There are no products available from category: " +
+                    category.name
+                ),
             )
             return redirect("dashboard")
 
@@ -456,7 +459,7 @@ def _set_quantities_from_products_form(products_form, current_cart):
         id__in=pks,
     ).select_related("category").order_by("id")
 
-    quantities.sort(key = lambda i: i[0])
+    quantities.sort(key=lambda i: i[0])
 
     # Match the product objects to their quantities
     product_quantities = [