Setting object to Django cache API fails due to sort error
I am trying to manually set an object in the Django cache API, but it doesn’t work (I think it is due to etching?) The object is provided to me by a third party, my code is:
def index(request, template_name="mytemplate.htm"):
user_list = cache.get("user_list_ds")
if user_list is None:
# this is the expensive bit I'm trying to cache
# given to me by a third part
user_list = graffiti.user_list("top", 100).responseObj().blocks()
cache.set("user_list_ds", user_list, 10*60) # 10 minutes
return render_to_response(template_name, { 'user_list' : user_list,}, context_instance = RequestContext(request))
When I run this, I get an error:
Can't pickle <type 'etree._Element'>: import of module etree failed
in - cache.set("user_list_ds", user_list, 10*60) # 10 minutes
I'm very new to python and I'm wondering what is the best way to solve this, I need to expand on something?
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It looks like you need to install ElementTree
because the operation is pickle
trying and unable to import the module etree
.
UPDATE: if you look at it, are you trying to cache document nodes? If you are trying to cache data from a node, you will probably need to do some processing on the value you are currently storing in user_list
.
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