Can List Comprehension Create Dictionaries in Python?

Creating a Dictionary with Comprehension

Question: Is it possible to leverage list comprehension to establish a dictionary?

Scenario: Creating a dictionary by iteratively traversing key-value pairs using list comprehension, expressed as d = {... for k, v in zip(keys, values)}.

Solution:

In Python 2.7 and later versions, you can utilize a dictionary comprehension, expressed as {key: value for key, value in zip(keys, values)}.

Alternatively, you can employ the dict constructor:

pairs = [('a', 1), ('b', 2)]
a = dict(pairs)  # Results in {'a': 1, 'b': 2}
b = dict((k, v + 10) for k, v in pairs)  # Results in {'a': 11, 'b': 12}

If you have two distinct lists, keys and values, you can use the dict constructor in conjunction with zip:

keys = ['a', 'b']
values = [1, 2]
c = dict(zip(keys, values))  # Results in {'a': 1, 'b': 2}

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