Specified when open should use binary mode.

Thanks Vinaj Sajip for the help of his django3 branch.

django/contrib/formtools/tests/wizard/namedwizardtests/tests.py

@@ -120,7 +120,7 @@ class NamedWizardTests(object):
         self.assertEqual(response.context['wizard']['steps'].current, 'form2')
 
         post_data = self.wizard_step_data[1]
-        post_data['form2-file1'] = open(__file__)
+        post_data['form2-file1'] = open(__file__, 'rb')
         response = self.client.post(
             reverse(self.wizard_urlname,
                     kwargs={'step': response.context['wizard']['steps'].current}),
@@ -147,7 +147,7 @@ class NamedWizardTests(object):
         self.assertEqual(response.status_code, 200)
 
         all_data = response.context['form_list']
-        self.assertEqual(all_data[1]['file1'].read(), open(__file__).read())
+        self.assertEqual(all_data[1]['file1'].read(), open(__file__, 'rb').read())
         del all_data[1]['file1']
         self.assertEqual(all_data, [
             {'name': u'Pony', 'thirsty': True, 'user': self.testuser},
@@ -168,7 +168,7 @@ class NamedWizardTests(object):
         self.assertEqual(response.status_code, 200)
 
         post_data = self.wizard_step_data[1]
-        post_data['form2-file1'] = open(__file__)
+        post_data['form2-file1'] = open(__file__, 'rb')
         response = self.client.post(
             reverse(self.wizard_urlname,
                     kwargs={'step': response.context['wizard']['steps'].current}),
@@ -180,7 +180,9 @@ class NamedWizardTests(object):
         response = self.client.get(step2_url)
         self.assertEqual(response.status_code, 200)
         self.assertEqual(response.context['wizard']['steps'].current, 'form2')
-        self.assertEqual(response.context['wizard']['form'].files['form2-file1'].read(), open(__file__).read())
+        self.assertEqual(
+            response.context['wizard']['form'].files['form2-file1'].read(),
+            open(__file__, 'rb').read())
 
         response = self.client.post(
             reverse(self.wizard_urlname,
@@ -197,7 +199,7 @@ class NamedWizardTests(object):
         self.assertEqual(response.status_code, 200)
 
         all_data = response.context['all_cleaned_data']
-        self.assertEqual(all_data['file1'].read(), open(__file__).read())
+        self.assertEqual(all_data['file1'].read(), open(__file__, 'rb').read())
         del all_data['file1']
         self.assertEqual(
             all_data,
@@ -221,7 +223,7 @@ class NamedWizardTests(object):
         self.assertEqual(response.status_code, 200)
 
         post_data = self.wizard_step_data[1]
-        post_data['form2-file1'] = open(__file__)
+        post_data['form2-file1'] = open(__file__, 'rb')
         response = self.client.post(
             reverse(self.wizard_urlname,
                     kwargs={'step': response.context['wizard']['steps'].current}),

django/contrib/formtools/tests/wizard/wizardtests/tests.py

@@ -80,7 +80,7 @@ class WizardTests(object):
         self.assertEqual(response.context['wizard']['steps'].current, 'form2')
 
         post_data = self.wizard_step_data[1]
-        post_data['form2-file1'] = open(__file__)
+        post_data['form2-file1'] = open(__file__, 'rb')
         response = self.client.post(self.wizard_url, post_data)
         self.assertEqual(response.status_code, 200)
         self.assertEqual(response.context['wizard']['steps'].current, 'form3')
@@ -93,7 +93,7 @@ class WizardTests(object):
         self.assertEqual(response.status_code, 200)
 
         all_data = response.context['form_list']
-        self.assertEqual(all_data[1]['file1'].read(), open(__file__).read())
+        self.assertEqual(all_data[1]['file1'].read(), open(__file__, 'rb').read())
         del all_data[1]['file1']
         self.assertEqual(all_data, [
             {'name': u'Pony', 'thirsty': True, 'user': self.testuser},
@@ -110,7 +110,7 @@ class WizardTests(object):
         self.assertEqual(response.status_code, 200)
 
         post_data = self.wizard_step_data[1]
-        post_data['form2-file1'] = open(__file__)
+        post_data['form2-file1'] = open(__file__, 'rb')
         response = self.client.post(self.wizard_url, post_data)
         self.assertEqual(response.status_code, 200)
 
@@ -121,7 +121,7 @@ class WizardTests(object):
         self.assertEqual(response.status_code, 200)
 
         all_data = response.context['all_cleaned_data']
-        self.assertEqual(all_data['file1'].read(), open(__file__).read())
+        self.assertEqual(all_data['file1'].read(), open(__file__, 'rb').read())
         del all_data['file1']
         self.assertEqual(all_data, {
             'name': u'Pony', 'thirsty': True, 'user': self.testuser,
@@ -138,7 +138,7 @@ class WizardTests(object):
         self.assertEqual(response.status_code, 200)
 
         post_data = self.wizard_step_data[1]
-        post_data['form2-file1'] = open(__file__)
+        post_data['form2-file1'] = open(__file__, 'rb')
         response = self.client.post(self.wizard_url, post_data)
         self.assertEqual(response.status_code, 200)
 
@@ -165,7 +165,7 @@ class WizardTests(object):
         self.assertEqual(response.context['wizard']['steps'].current, 'form2')
 
         post_data = self.wizard_step_data[1]
-        post_data['form2-file1'] = open(__file__)
+        post_data['form2-file1'] = open(__file__, 'rb')
         response = self.client.post(self.wizard_url, post_data)
         self.assertEqual(response.status_code, 200)
         self.assertEqual(response.context['wizard']['steps'].current, 'form3')

django/core/management/commands/compilemessages.py

@@ -5,7 +5,7 @@ from optparse import make_option
 from django.core.management.base import BaseCommand, CommandError
 
 def has_bom(fn):
-    with open(fn, 'r') as f:
+    with open(fn, 'rb') as f:
         sample = f.read(4)
     return sample[:3] == '\xef\xbb\xbf' or \
             sample.startswith(codecs.BOM_UTF16_LE) or \

django/template/loaders/app_directories.py

@@ -52,7 +52,7 @@ class Loader(BaseLoader):
     def load_template_source(self, template_name, template_dirs=None):
         for filepath in self.get_template_sources(template_name, template_dirs):
             try:
-                with open(filepath) as fp:
+                with open(filepath, 'rb') as fp:
                     return (fp.read().decode(settings.FILE_CHARSET), filepath)
             except IOError:
                 pass

django/template/loaders/filesystem.py

@@ -34,7 +34,7 @@ class Loader(BaseLoader):
         tried = []
         for filepath in self.get_template_sources(template_name, template_dirs):
             try:
-                with open(filepath) as fp:
+                with open(filepath, 'rb') as fp:
                     return (fp.read().decode(settings.FILE_CHARSET), filepath)
             except IOError:
                 tried.append(filepath)

tests/regressiontests/views/tests/static.py

@@ -29,7 +29,7 @@ class StaticTests(TestCase):
         for filename in media_files:
             response = self.client.get('/views/%s/%s' % (self.prefix, filename))
             file_path = path.join(media_dir, filename)
-            with open(file_path) as fp:
+            with open(file_path, 'rb') as fp:
                 self.assertEqual(fp.read(), response.content)
             self.assertEqual(len(response.content), int(response['Content-Length']))
             self.assertEqual(mimetypes.guess_type(file_path)[1], response.get('Content-Encoding', None))
@@ -41,14 +41,14 @@ class StaticTests(TestCase):
     def test_copes_with_empty_path_component(self):
         file_name = 'file.txt'
         response = self.client.get('/views/%s//%s' % (self.prefix, file_name))
-        with open(path.join(media_dir, file_name)) as fp:
+        with open(path.join(media_dir, file_name), 'rb') as fp:
             self.assertEqual(fp.read(), response.content)
 
     def test_is_modified_since(self):
         file_name = 'file.txt'
         response = self.client.get('/views/%s/%s' % (self.prefix, file_name),
             HTTP_IF_MODIFIED_SINCE='Thu, 1 Jan 1970 00:00:00 GMT')
-        with open(path.join(media_dir, file_name)) as fp:
+        with open(path.join(media_dir, file_name), 'rb') as fp:
             self.assertEqual(fp.read(), response.content)
 
     def test_not_modified_since(self):
@@ -71,7 +71,7 @@ class StaticTests(TestCase):
         invalid_date = 'Mon, 28 May 999999999999 28:25:26 GMT'
         response = self.client.get('/views/%s/%s' % (self.prefix, file_name),
                                    HTTP_IF_MODIFIED_SINCE=invalid_date)
-        with open(path.join(media_dir, file_name)) as fp:
+        with open(path.join(media_dir, file_name), 'rb') as fp:
             self.assertEqual(fp.read(), response.content)
         self.assertEqual(len(response.content),
                           int(response['Content-Length']))
@@ -86,7 +86,7 @@ class StaticTests(TestCase):
         invalid_date = ': 1291108438, Wed, 20 Oct 2010 14:05:00 GMT'
         response = self.client.get('/views/%s/%s' % (self.prefix, file_name),
                                    HTTP_IF_MODIFIED_SINCE=invalid_date)
-        with open(path.join(media_dir, file_name)) as fp:
+        with open(path.join(media_dir, file_name), 'rb') as fp:
             self.assertEqual(fp.read(), response.content)
         self.assertEqual(len(response.content),
                           int(response['Content-Length']))