What is the Pythonic way to use (elements of) a list as keys in a dictionary?

dictionary, list, python

Solution

you can use dict comprehensions:

In [1]: keys = ['Orange', 'Blue', 'Green']

In [2]: colors={key: [] for key in keys}

In [3]: colors
Out[3]: {'Blue': [], 'Green': [], 'Orange': []}

for python 2.6:

In [4]: colors = dict((key, []) for key in keys)

In [5]: colors
Out[5]: {'Blue': [], 'Green': [], 'Orange': []}

Problem

Given the list: ``` keys = ['Orange','Blue','Green'] ``` and the dictionary ``` colors = {} ``` What is the most Pythonic way to use (the elements of) `keys` as the keys to `colors`? I'm currently doing the following but want to know if there's a better way of using Python than this. ``` for key in keys: colors[key] = [] ``` EDIT: The question originally asked for "the most Pythonic way to use `keys` as the keys to `colors`", but the subsequent code snippet indicates that what's actually required is a way to use its elements.

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