OrederedDict
import collections
#dictionnarry that remembers the order in which the items where given
print 'Regular dictionary:'
d = {}
d['a'] = 'A'
d['b'] = 'B'
d['c'] = 'C'
d['d'] = 'D'
d['e'] = 'E'
for k, v in d.items():
print k, v
print '\nOrderedDict:'
d = collections.OrderedDict()
d['a'] = 'A'
d['b'] = 'B'
d['c'] = 'C'
d['d'] = 'D'
d['e'] = 'E'
for k, v in d.items():
print k, v
>>>$ python collections_ordereddict_iter.py
Regular dictionary:
a A
c C
b B
e E
d D
OrderedDict:
a A
b B
c C
d D
e E
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