Fixed some comma splices in the 'Insert in bulk' section of db/optimization.txt

        Entry(headline="Python 3.1 Planned")

    ])

Is preferable to::

...is preferable to::

    Entry.objects.create(headline="Python 3.0 Released")

    Entry.objects.create(headline="Python 3.1 Planned")

Note that there are a number of :meth:`caveats to this method

<django.db.models.query.QuerySet.bulk_create>`, make sure it is appropriate for

your use case. This also applies to :class:`ManyToManyFields

<django.db.models.ManyToManyField>`, doing::

<django.db.models.query.QuerySet.bulk_create>`, so make sure it's appropriate

for your use case.

This also applies to :class:`ManyToManyFields

<django.db.models.ManyToManyField>`, so doing::

    my_band.members.add(me, my_friend)

Is preferable to::

...is preferable to::

    my_band.members.add(me)

    my_band.members.add(my_friend)

Where ``Bands`` and ``Artists`` have a many-to-many relationship.

...where ``Bands`` and ``Artists`` have a many-to-many relationship.