RuntimeError Root Cause
You called this URL via POST, but the URL doesn‘t end in a slash and you have APPEND_SLASH set. Django can‘t redirect to the slash URL while maintaining POST data. Change your form to point to 192.168.1.59:8000/items/add_item/ (note the trailing slash), or set APPEND_SLASH=False in your Django settings.解释:最后未加/
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原文：http://blog.csdn.net/dale_dede/article/details/48030963