Class DictAttribute

source code

          object --+    
                   |    
attrdef.AttributeDef --+
                       |
                      DictAttribute

Known Subclasses:

• PropertyAttribute

an attribute containing a mapping.

DictAttributes are fairly complex beasts supporting a number of input forms.

The input to those looks like <d key="foo">abc</d>; they are constructed with an itemAttD (like StructAttributes), but the name on those is ignored; they are just used for parsing from the strings in the element bodies, which means that itemAttDs must be derived from AtomicAttribute.

You can give a different keyNames; the key attribute is always accepted, though.

For sufficiently exotic situations, you can construct DictAttributes with inverted=True; the resulting dictionary will then have the keys as values and vice versa (this is a doubtful feature; let us know when you use it).

You can also add to existing values using the cumulate XML attribute; <d key="s">a</d><d key="s" cumulate="True">bc</a> will leave abc in s.