models.BaseModelFormSet.changed_objects

driver_count Returns the number of OGR vector drivers currently registered.

Field.unique_for_month Like unique_for_date, but requires the field to be unique with respect to the month.

LogEntry.object_repr The object`s repr() after the modification.

sample By default, StdDev returns the population standard deviation. However, if sample=True, the return value will be the sample standard deviation. SQLite SQLite doesn’t provide StdDev out of the box. An implementation is available as an extension module for SQLite. Consult the SQlite documentation for instructions on obtaining and installing this extension.

GeoIP.city_info This property returns information about the GeoIP city database.

set_test_cookie() Sets a test cookie to determine whether the user’s browser supports cookies. Due to the way cookies work, you won’t be able to test this until the user’s next page request. See Setting test cookies below for more information.

class MemSize(expression, **extra) Availability: PostGIS Accepts a single geographic field or expression and returns the memory size (number of bytes) that the geometry field takes.

sample By default CovarPop returns the general population covariance. However, if sample=True, the return value will be the sample population covariance.

class RegrSXX(y, x) [source] Returns sum(x^2) - sum(x)^2/N (“sum of squares” of the independent variable) as a float, or None if there aren’t any matching rows.