# `AddColumnSignal`

#### Called when a column is added to a class, with arguments `(cls, connection, column_name, column_definition, changeSchema, post_funcs)`. This is called after the column has been added, and is called for each column after class creation.

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

post_funcs are called with `(cls, so_column_obj)`

## 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.