- 67FcsdkZdZdZ dZ dfdYZ+defdYZZedZjd Z ud Z dk Z dk Z dkZdkZdkZdkZd klZd e iiifd YZdfdYZdS(Niics  ||jSdS(N(sasb(sasb((s __init__.pys_compare ssDatacsD dZedZdZedZ%dZRS(sAn empty data structure. Useful for data structures with dynamic member fields, i.e. adding new member variables at run time. c s|i||dS(N(sselfsupdatesotherskw(sselfsotherskw((s __init__.pys__init__scs|i}d|i|if}x=|iiD])\}}|d|t |f7}q;W|d7}|SdS(Ns%s.%s(s%s=%s, s)( sselfs __class__scs __module__s__name__sss__dict__sitemssksvsrepr(sselfsssvscsk((s __init__.pys__repr__s ! c sD |tjo!|ii|in"|ii|dS(N(sothersNonesselfs__dict__supdateskw(sselfsotherskw((s __init__.pysupdatescs*%&t}'|i|(|SdS(N(sDatasothersupdatesself(sselfsother((s __init__.pysclone%s (s__doc__sNones__init__s__repr__supdatesclone(((s __init__.pysData s  s DefaultedDatacsS+dZ9;eedZAdZKdZOdZVdZRS(s(An empty data structure, like Data. This one, however, returns a specified default value for any undefined field. This avoid having to set up alot of exception handlers in order to test whether a given field is present. It also accepts a Data in its c'tor. This is useful for wrapping an existing Data when the 'defualted' behavior is desired. example: d = Data(x=1, y=2) dd = DefaultedData(data=d, a=100) dd.x => 1 dd.y => 2 dd.a => 100 dd.b => None c s:;<|ii|=||id<>||id