forms: load csv as text in py3

corbo/forms.py

@@ -2,10 +2,12 @@ import csv
 
 from django import forms
 from django.utils.translation import ugettext_lazy as _
+from django.utils.encoding import force_text
 from django.utils.text import slugify
 from django.core.exceptions import ObjectDoesNotExist
 from django.core import validators
 from django.core.exceptions import ValidationError
+from django.utils import six
 
 from .models import Announce, Category, Broadcast, channel_choices
 from . import widgets
@@ -67,6 +69,8 @@ class SubscriptionsImportForm(forms.Form):
 
     def clean_subscribers(self, *args, **kwargs):
         subscribers = []
+        if six.PY3:
+            self.cleaned_data['subscribers'] = force_text(self.cleaned_data['subscribers'].read()).splitlines()
         reader = csv.reader(self.cleaned_data['subscribers'])
         for idx, row in enumerate(reader, 1):
             if not row or not row[0]: