fixed bug for no saved file

diff --git a/tweepy/api.py b/tweepy/api.py
index 4a2599c76ff3c653b200271c81d0b9912d0d81d3..38b7a2e0a8dafceeb87268abe3fffc7c0eb5a73e 100644 (file)
--- a/tweepy/api.py
+++ b/tweepy/api.py
@@ -221,7 +221,7 @@ class API(object):
         """
         f = kwargs.pop('file', None)
 
-        file_type = imghdr.what(filename) or mimetypes.guess_type(filename)[0]
+        file_type = imghdr.what(filename, f) or mimetypes.guess_type(filename)[0]
         if file_type == 'gif':
             max_size = 14649
         else: