[Django]-Upload file with unicode filename

I believe the problem is with your string formatting. In python2, it automatically converts between str type (which is a series of bytes) and unicode type, which represents the abstract series of unicode codepoints.

I’m assuming that your filename is of type unicode.

"tmp/%s/%s" is a byte string, so python will try to automatically encode your unicode into str to match. The problem is that it uses the ascii encoding to do so, which can’t hold your data.

Changing your return statement to use temp2 instead of filename should work, since now you’re using the right types together.

For the future, I’d also recommend watching the presentation I linked to in the comments, as it provides several strategies for avoiding this class of problem. The main one is that you should only use bytes when sending data outside your program. As soon as you receive bytes from the outside world, decode them to unicode, and only encode when you’re sending the data out of your program. You should also use unicode string literals internally (u"" instead of "").

I’d also recommend more meaningful variable names than tempN.