Hello!
In order to explain, let define subclass of dict:
class Pair:
def __init__(self, key, val):
self.key = key
self.val = val
class MyDict(dict):
#
def __init__(self, *args, **kwds):
if len(args) > 1:
raise TypeError('Expected at most 1 arguments, but got %d' %
len(args))
for key, val in args[0]:
self[key] = val
for key, val in kwds.items():
self[key] = val
def __getitem__(self, key):
pair = dict.__getitem__(key)
return pair.value
def __setitem__(self, key, val):
if key in self:
pair = dict.__getitem__(key)
pair.value = value
else:
pair = Pair(key, val)
dict.__setitem__(self, key, pair)
def values(self):
for key in self:
p = dict.__getitem__(self, key)
yield p.value
def items(self):
for key, p in dict.__iter__(self):
yield p.key, p.value
The simple test give me strange result:
>>> d = MyDict([('a', 1), ('b', 2), ('c', 3)])
>>> dict(d)
{'a': <__main__.Pair at 0x104ca9e48>,
'b': <__main__.Pair at 0x104ca9e80>,
'c': <__main__.Pair at 0x104ca9eb8>}
instead of {'a':1, 'b':2, 'c':3}.
Is this right behavior of the dict?
---
Zaur Shibzukhov
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