Irit Katriel <iritkatr...@gmail.com> added the comment:
Indeed, as Terry wrote the assumption is that header is a mapping (not
necessarily a dict). It is not hard to implement a Multimap that has this API:
import collections.abc
class Multimap(collections.abc.Mapping):
def __init__(self):
self.data = collections.defaultdict(list)
def __getitem__(self, key):
return self.data[key]
def __setitem__(self, key, value):
self.data[key].append(value)
def __iter__(self):
yield from self.data
def items(self):
for k in list(self.data.keys()):
for v in list(self.data[k]):
yield (k,v)
def __len__(self):
return sum([len(v) for v in self.data.values()])
mm = Multimap()
mm['1'] = 'a'
mm['1'] = 'aa'
mm['1'] = 'aaa'
mm['2'] = 'b'
mm['3'] = 'c'
mm['3'] = 'cc'
print(f'len = {len(mm)}')
print(f'mm.items() = {list(mm.items())}')
Output:
len = 6
mm.items() = [('1', 'a'), ('1', 'aa'), ('1', 'aaa'), ('2', 'b'), ('3', 'c'),
('3', 'cc')]
----------
nosy: +iritkatriel
resolution: out of date -> not a bug
stage: -> resolved
status: open -> closed
_______________________________________
Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue3276>
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