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Python Language Creating an ordered dictionary


Example

You can create an ordered dictionary which will follow a determined order when iterating over the keys in the dictionary.

Use OrderedDict from the collections module. This will always return the dictionary elements in the original insertion order when iterated over.

from collections import OrderedDict

d = OrderedDict()
d['first'] = 1
d['second'] = 2
d['third'] = 3
d['last'] = 4

# Outputs "first 1", "second 2", "third 3", "last 4"
for key in d:
    print(key, d[key])