Package gavo :: Package base :: Module attrdef :: Class AtomicAttribute

Class AtomicAttribute

  object --+    
           |    
AttributeDef --+
               |
              AtomicAttribute

Known Subclasses:

A base class for attributes than can be immediately parsed and unparsed from strings.

They need to provide a parse method taking a unicode object and returning a value of the proper type, and an unparse method taking a value of the proper type and returning a unicode string suitable for parse.

Note that you can, of course, assign to the attribute directly. If you assign crap, the unparse method is explicitely allowed to bomb in random ways; it just has to be guaranteed to work for values coming from parse (i.e.: user input is checked, programmatic input can blow up the thing; I consider this pythonesque :-).

Instance Methods

feed(self, ctx, instance, value)

source code

feedObject(self, instance, value)

source code

getCopy(self, instance, newParent, ctx)

source code

makeUserDoc(self)

source code

parse(self, value)
returns a typed python value for the string representation value.

source code

unparse(self, value)
returns a typed python value for the string representation value.

source code

Inherited from AttributeDef: __init__, doCallbacks, iterParentMethods

Inherited from object: __delattr__, __format__, __getattribute__, __hash__, __new__, __reduce__, __reduce_ex__, __repr__, __setattr__, __sizeof__, __str__, __subclasshook__

Class Variables
Inherited from `AttributeDef`: `typeDesc_`

Properties
Inherited from `object`: `__class__`

Method Details

returns a typed python value for the string representation value.

value can be expected to be a unicode string.

unparse(self, value)

source code

returns a typed python value for the string representation value.

value can be expected to be a unicode string.