Reformat code to PEP8

RIGS/finance.py

@@ -1,20 +1,19 @@
 import cStringIO as StringIO
+import datetime
+import re
 
+from django.contrib import messages
 from django.core.urlresolvers import reverse_lazy
-from django.db import connection
 from django.http import Http404, HttpResponseRedirect
-from django.views import generic
-from django.template import RequestContext
-from django.template.loader import get_template
 from django.http import HttpResponse
 from django.shortcuts import get_object_or_404
-from django.contrib import messages
+from django.template import RequestContext
-import datetime
+from django.template.loader import get_template
+from django.views import generic
 from z3c.rml import rml2pdf
 
 from RIGS import models
 
-import re
 
 class InvoiceIndex(generic.ListView):
     model = models.Invoice
@@ -40,6 +39,7 @@ class InvoiceIndex(generic.ListView):
 class InvoiceDetail(generic.DetailView):
     model = models.Invoice
 
+
 class InvoicePrint(generic.View):
     def get(self, request, pk):
         invoice = get_object_or_404(models.Invoice, pk=pk)
@@ -72,6 +72,7 @@ class InvoicePrint(generic.View):
         response.write(pdfData)
         return response
 
+
 class InvoiceVoid(generic.View):
     def get(self, *args, **kwargs):
         pk = kwargs.get('pk')