export PATH=\"/Applications/MAMP/bin:/usr/local/bin:/usr/local/sbin:usr/local/$
export DYLD_LIBRARY_PATH=\"/usr/local/mysql/lib:$DYLD_LIBRARY_PAT
You are seeing this because you don't have locale set on your system. You need to set it in order to create superuser, it's known and reported "bug" already.
see: https://code.djangoproject.com/ticket/17649
Assuming that you're using linux you can fix that bug with
export LANG="en_US.UTF-8"
You use this in terminal, but you can easily check and see how to change locales on your system just googling.
If you're using:
Ubuntu - https://help.ubuntu.com/community/Locale/
Archlinux - https://wiki.archlinux.org/index.php/Locale
...