Stopped stripping microseconds with MySQL backend

            else:

                raise ValueError("MySQL backend does not support timezone-aware datetimes when USE_TZ is False.")

        # MySQL doesn't support microseconds

        return six.text_type(value.replace(microsecond=0))

        return six.text_type(value)

    def value_to_db_time(self, value):

        if value is None:

        if timezone.is_aware(value):

            raise ValueError("MySQL backend does not support timezone-aware times.")

        # MySQL doesn't support microseconds

        return six.text_type(value.replace(microsecond=0))

    def year_lookup_bounds_for_datetime_field(self, value):

        # Again, no microseconds

        first, second = super(DatabaseOperations, self).year_lookup_bounds_for_datetime_field(value)

        return [first.replace(microsecond=0), second.replace(microsecond=0)]

        return six.text_type(value)

    def max_name_length(self):

        return 64

* The ``incr()`` method of the

  ``django.core.cache.backends.locmem.LocMemCache`` backend is now thread-safe.

Database backends

^^^^^^^^^^^^^^^^^

* The MySQL backend no longer strips microseconds from ``datetime`` values as

  MySQL 5.6.4 and up supports fractional seconds depending on the declaration

  of the datetime field (when ``DATETIME`` includes fractional precision greater

  than 0).

Email

^^^^^