add support for non-ascii filenames in UploadMediaChunked

Author: jeremylow

tests/test_api_30.py

@@ -1702,6 +1702,18 @@ def testPostUploadMediaChunkedAppend(self):
         self.assertEqual(len(responses.calls), 7)
         self.assertTrue(resp)
 
+    @responses.activate
+    def testPostUploadMediaChunkedAppendNonASCIIFilename(self):
+        media_fp, filename, _, _ = twitter.twitter_utils.parse_media_file(
+            'testdata/corgi.gif')
+        filename = "عَرَبِيّ"
+        responses.add(responses.POST, DEFAULT_URL, body='', status=200)
+
+        resp = self.api._UploadMediaChunkedAppend(media_id=737956420046356480,
+                                                  media_fp=media_fp,
+                                                  filename=filename)
+        self.assertEqual(len(responses.calls), 7)
+
     @responses.activate
     def testPostUploadMediaChunkedFinalize(self):
         with open('testdata/post_upload_chunked_FINAL.json') as f:

twitter/api.py

@@ -1185,7 +1185,7 @@ def _UploadMediaChunkedAppend(self,
                 b'',
                 str(segment_id).encode('utf-8'),
                 boundary,
-                'Content-Disposition: form-data; name="media"; filename="{0}"'.format(filename).encode('utf8'),
+                'Content-Disposition: form-data; name="media"; filename="{0!r}"'.format(filename).encode('utf8'),
                 b'Content-Type: application/octet-stream',
                 b'',
                 data,