与参数“()”和关键字参数“{u'cd”:“}”相反的“课程细节”。1模式(s)尝试:['课程/(? P < cd > \ \ d +)/美元)

I am fairly new to Django and I followed a tutorial which helped create a blog using Django. That project went fine. But when I wanted to use what I learnt form that tutorial and make my own simple website that's when things went pear shaped. I have been at this problem for a long time now and it is really bugging me, so I hoped a fresh pair of eyes could help me decode the issue.I am fairly new to Django and I followed a tuto