Replaced cStringIO.StringIO by io.BytesIO.

Also replaced StringIO.StringIO by BytesIO in some other appropriate
places. StringIO is not available in Python 3.

1 files changed, 3 insertions, 6 deletions

diff --git a/django/core/files/uploadhandler.py b/django/core/files/uploadhandler.py
index 4316fddf43..88f78904bb 100644
--- a/django/core/files/uploadhandler.py
+++ b/django/core/files/uploadhandler.py
@@ -2,10 +2,7 @@
 Base file upload handler classes, and the built-in concrete subclasses
 """
 
-try:
-    from cStringIO import StringIO
-except ImportError:
-    from StringIO import StringIO
+from io import BytesIO
 
 from django.conf import settings
 from django.core.exceptions import ImproperlyConfigured
@@ -161,12 +158,12 @@ class MemoryFileUploadHandler(FileUploadHandler):
     def new_file(self, *args, **kwargs):
         super(MemoryFileUploadHandler, self).new_file(*args, **kwargs)
         if self.activated:
-            self.file = StringIO()
+            self.file = BytesIO()
             raise StopFutureHandlers()
 
     def receive_data_chunk(self, raw_data, start):
         """
-        Add the data to the StringIO file.
+        Add the data to the BytesIO file.
         """
         if self.activated:
             self.file.write(raw_data)