How to convert set into dict in python

user_1260682 0
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What's the simplest way to convert a set into a dict? Say from {'a', 'b'} into {'a': 0, 'b': 1}? Ordering doesn't matter but it should start from 0 up to the size of the set itself.

set dictionary python
4 Answers

Just use dictionary comprehension with enumerate

>>> s = {'a', 'b'}
>>> {k:idx for idx,k in enumerate(s)}
{'a': 0, 'b': 1}
user_91363480

Just use the dict constructor with zip and range:

>>> s = {'a', 'b'}
>>> dict(zip(s, range(len(s))))
{'b': 0, 'a': 1}

And a similar approach, using itertools.count:

>>> from itertools import count
>>> dict(zip(s, count()))
{'b': 0, 'a': 1}
user_50144550

You can use enumerate:

set1={'a', 'b'}
dict1={j:i for i,j in enumerate(set1)}
print(dict1)

Output:

{'b': 0, 'a': 1}
Admin1 
>>> a = {'a', 'b'}
>>> dic = {i:val for val, i in enumerate(a)}
>>> dic
{'b': 0, 'a': 1}
user_162526010
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