On Nov 8, 11:17 am, Scott Gould <zinck...@gmail.com> wrote: > Hi folks, > > This is a head-scratcher to me. I occasionally get this error: > > --- > File "/var/www/myproj/account/views.py", line 54, in account > if request.account.is_instructor and request.account.contact and > request.account.contact.relationship.institution_party_number: > > AttributeError: 'NoneType' object has no attribute 'relationship' > --- > > I'm leaving out all the supporting code deliberately. My question is > simple: if python short-circuits evaluation and > "request.account.contact" is None, how is it even getting as far as > "request.account.contact.relationship.institution_party_number"? > > Thanks!
Hard to tell without details. Maybe request.account.contact is an impure property with side effects? -- http://mail.python.org/mailman/listinfo/python-list
