Commit 3bdb65dc authored by Tim Graham's avatar Tim Graham
Browse files

Updated print statements to work with py3; thanks Claude Paroz noting this.

parent 4754f122

docs/ref/models/querysets.txt

+5 −5
Original line number Diff line number Diff line
@@ -1271,7 +1271,7 @@ The :exc:`~django.core.exceptions.DoesNotExist` exception inherits from 
        e = Entry.objects.get(id=3)

        b = Blog.objects.get(id=1)

    except ObjectDoesNotExist:

        print "Either the entry or blog doesn't exist."

        print("Either the entry or blog doesn't exist.")



create

~~~~~~
@@ -1538,23 +1538,23 @@ The most efficient method of finding whether a model with a unique field 


    entry = Entry.objects.get(pk=123)

    if some_query_set.filter(pk=entry.pk).exists():

        print "Entry contained in queryset"

        print("Entry contained in queryset")



Which will be faster than the following which requires evaluating and iterating

through the entire queryset::



    if entry in some_query_set:

       print "Entry contained in QuerySet"

       print("Entry contained in QuerySet")



And to find whether a queryset contains any items::



    if some_query_set.exists():

        print "There is at least one object in some_query_set"

        print("There is at least one object in some_query_set")



Which will be faster than::



    if some_query_set:

        print "There is at least one object in some_query_set"

        print("There is at least one object in some_query_set")



... but not by a large degree (hence needing a large queryset for efficiency

gains).