# `RowUpdateSignal`

#### Called when an instance is updated through a call to `.set()` (or a column attribute assignment). The arguments are `(instance, kwargs)`. `kwargs` can be modified. This is run before the instance is updated; if you want to look at the current values, simply look at `instance`.

The RowUpdateSignal class is accessible via the `sqlobject.events` module.

## Methods

#### f `__sizeof__(...)` ...

__sizeof__() -> int size of object in memory, in bytes

#### f `__format__(...)` ...

default object formatter

#### f `__subclasshook__(...)` ...

Abstract classes can override this to customize issubclass().

This is invoked early on by abc.ABCMeta.__subclasscheck__(). It should return True, False or NotImplemented. If it returns NotImplemented, the normal algorithm is used. Otherwise, it overrides the normal algorithm (and the outcome is cached).

#### f `__init__(...)` ...

x.__init__(...) initializes x; see help(type(x)) for signature

See the source for more information.