def __init__(self, keys, **kwargs):
"""
@param keys is a list containing the keys of the dict
@param kwargs will contain the necessary arguments to
construct each descriptor of the dict. These
arguments start with the name of the key.
"""
self.delegates = {}
for item_name in keys:
kwargs_delegate = dict((item[len(item_name)+1:], kwargs[item])
for item in kwargs.keys()
if item.startswith(item_name + "_"))
klass = find_descriptor(kwargs_delegate["type"])
self.delegates[item_name] = klass(**kwargs_delegate)
def __init__(self, length, item_type, **kwargs):
"""
@length is the length of the list
@item_type is the type of every item on the list
@kwargs contains the arguments necessary to construct
the delegator for the nested descriptors. These
arguments start with "item_"
"""
if len(item_type) == 0:
raise RequirementViolated("Requirement of item_type violated.")
self.length = length
klass = find_descriptor(item_type)
kwargs_delegate = dict((item[5:], kwargs[item])
for item in kwargs.keys()
if item.startswith("item_"))
self.delegate = klass(**kwargs_delegate)