Class Field

source code

     object --+    
              |    
util_types.Anon --+
                  |
                 Field

Field(name, default, accept=str, format=str): an attribute for <properties>.

• name: the object attribute of interest, e.g. name="foo" selects obj.foo
• default: default value, of whatever type
• accept: function which parses a string and returns the appropriate type, or raises an exception in this case the exception means to fall back to the default
• format: function which converts your type to string; or a %-style format string, e.g. "%.8g"