#22531: Q objects lack a useful repr
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Reporter: Keryn Knight <django@…> | Owner: nobody
Type: New feature | Status: new
Component: Database layer (models, ORM) | Version: master
Severity: Normal | Keywords:
Triage Stage: Unreviewed | Has patch: 0
Easy pickings: 0 | UI/UX: 0
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{{{
>>> from django.db.models.query_utils import Q
>>> a = Q()
>>> b = Q(a=1, b=2)
>>> c = b & Q(c=3)
>>> d = c | Q(d=4)
>>> e = Q(d) & Q(e=5)
>>> f = e | ~Q(f=6)
>>> repr(f) # actually just typing f<enter> into ipython/pdb/python REPL
'<django.db.models.query_utils.Q at 0x103184050>'
}}}
That's not exactly useful, given a Q object may represent a complex tree.
As it turns out, Q objects '''do''' implement str, which is the SQL output
for the Node subclass, which would be more useful than the above repr, and
possibly more useful than the nested repr of .children
The simplest repr implementation would probably be something like:
{{{
def __repr__(self):
return '{obj.__class__!r} {obj!s}'.format(obj=self)
}}}
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Ticket URL: <https://code.djangoproject.com/ticket/22531>
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