python - Django : Deduce duplicate key exception from IntegrityError -


this question has answer here:

with django 1.6, exception when there's duplicate key 

integrityerror: duplicate key value violates unique constraint "..."

django uses integrityerror exception other types of database violations too. want handle duplicate key special case i.e. 

try:     model = mymodel(name='xyz')     model.save() except mymodal.integrityerror:     if exception_due_to_duplicate_key:         do_something() except:     do_something_else()

is there unique error code or have parse error message. i'm trying avoid get call database ascertain violation due duplicate key.

update: should mention exception thrown psycopg2 since i'm using django postgresql.

based on comment @karthikr, found error type:

type(e.__cause__) <class 'psycopg2.integrityerror'>

a little poking around showed this:

e.__cause__.pgcode '23505'

my understanding is, long stick same database can check verify it's duplicate key error.

& psycopg2 doesn't change error code,


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