60c2b9f5 |
import itertools
def dict_merge(dct1, dct2):
commonkeys = set(dct1) & set(dct2)
newkeys = set(dct2) - commonkeys
for key in commonkeys:
olditem = dct1[key]
newitem = dct2[key]
if hasattr(newitem, 'items') and hasattr(olditem, 'items'):
dict_merge(olditem, newitem)
elif hasattr(olditem, 'update') and hasattr(newitem, '__iter__'):
olditem.update(newitem)
elif hasattr(olditem, 'extend') and hasattr(newitem, '__iter__'):
olditem.extend(newitem)
else:
dct1[key] = dct2[key]
dct1.update( (k,dct2[k]) for k in newkeys )
return dct1
class _Null: pass
class Hier(object):
####################
# Class Attributes #
####################
@classmethod
def init(cls):
if not hasattr(cls, 'hier'):
cls.hier = {}
@classmethod
def from_dict(cls, dct):
cls.init()
dict_merge(cls.hier, dct)
return cls()
#######################
# Instance Attributes #
#######################
def __init__(self, name=''):
self.init()
self._name = name
self._values = self.hier
for segment in self._name.split('.'):
item = self._values.get(segment)
if hasattr(item, 'items'):
print item
self._values = item
elif name != '':
raise ValueError('no such item: %r' % self._name)
def __getattribute__(self, name):
try:
return object.__getattribute__(self, name)
except AttributeError:
if name in self._values:
result = self._values[name]
if hasattr(result, 'items'):
if self._name == '': result = Hier(name)
else: result = Hier('%s.%s' % (self._name, name))
return result
else:
raise
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