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1from ._version import __version_info__, __version__ # noqa
2from .attribute_dict import AttributeDict
3from .alias_dict import AliasDict
6class Lexicon(AttributeDict, AliasDict):
7 def __init__(self, *args, **kwargs):
8 # Need to avoid combining AliasDict's initial attribute write on
9 # self.aliases, with AttributeDict's __setattr__. Doing so results in
10 # an infinite loop. Instead, just skip straight to dict() for both
11 # explicitly (i.e. we override AliasDict.__init__ instead of extending
12 # it.)
13 # NOTE: could tickle AttributeDict.__init__ instead, in case it ever
14 # grows one.
15 dict.__init__(self, *args, **kwargs)
16 dict.__setattr__(self, "aliases", {})
18 def __getattr__(self, key):
19 # Intercept deepcopy/etc driven access to self.aliases when not
20 # actually set. (Only a problem for us, due to abovementioned combo of
21 # Alias and Attribute Dicts, so not solvable in a parent alone.)
22 if key == "aliases" and key not in self.__dict__:
23 self.__dict__[key] = {}
24 return super(Lexicon, self).__getattr__(key)