django urlencode filter

I have a problem with encoding urls using build-in django urlencode filter. When I use it on default django server everything is fine. But on apache2 it doesn`t work, ie. i have a tag called C#. On loca开发者_如何学Pythonlhost my url is encoded to ...tags/C%23/ but on apache2 it is tags/C/

What should I do?

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I guess this is a bug with apache, simplest solution would be do url encoding twice or do a base64 encoding.