Not to belabor the point, but this is the part that I find weird. This is 
down in the "During handling of the above exception ('UUID' object has no 
attribute 'replace'), another exception occurred" section.

/usr/local/venvs/attrack/lib/python3.6/site-packages/django/db/models/fields/__init__.py
 
in to_python
        if value is not None and not isinstance(value, uuid.UUID): <<-------- 
1) CHECKS FOR NOT UUID
            try:
                return uuid.UUID(value)  <<----- 2) Pretty sure first 
exception is in here
            except (AttributeError, ValueError):
                raise exceptions.ValidationError(
                    self.error_messages['invalid'],
                    code='invalid',
                    params={'value': value}, <<------  Traceback says new 
exception here
                )
        return value

Local vars
Variable Value
self <django.db.models.fields.UUIDField: id>
value UUID('338fa43f-3e07-4e83-8525-d195d2fc64d4')  <<-------- 3) REPORTS 
AS UUID

So, if 3) is right and 'value' is a UUID, 1) should keep us from getting to 
2). But we get there.

On Friday, February 23, 2018 at 12:59:28 PM UTC-8, M Mackey wrote:
>
> Adding details I seem to have left out. The id is defined like this:
> id = models.UUIDField(primary_key=True, default=uuid.uuid1, editable=False)
> and I'm running on PostgreSQL.
> I'm pretty sure I never create a row without already having the key.
>
>

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