How can I convert a list of lists into a dictionary of lists in Python?

Question

I have a list with four lists in it. I want to assign each inner list a name, basically convert the list with four lists into a dictionary with four named lists. How can I do that in a Pythonic way? I saw this question but it was too specfic.

dictionary["list1"] = lists[0]
dictionary["list2"] = lists[1]
dictionary["list3"] = lists[2]
dictionary["list4"] = lists[3]

Edit: I would like to know how to do that with arbitrary dictionary keys - not just list1,list2,list3, etc.

Have you tried to adapt that answer to work for you? Your problem is quite similar to that one — inspectorG4dget
– inspectorG4dget, Commented Mar 14, 2016 at 18:06
It was too dense for me to understand, and I thought generalizing the problem a bit would get me a simple answer. — Hassaan
– Hassaan, Commented Mar 14, 2016 at 18:11
Then you are not going to understand the solution I posted. You might want to post something that you've attempted, so that we can show you where you went wrong — inspectorG4dget
– inspectorG4dget, Commented Mar 14, 2016 at 18:12
My solution is no more complex than the solution on the post you linked. I wasn't being negative - simply stating that you have two approximately equally complex solutions to two very similar problems — inspectorG4dget
– inspectorG4dget, Commented Mar 14, 2016 at 18:33

inspectorG4dget · Accepted Answer · 2016-03-14 20:33:15Z

1

This should do the trick

import itertools

names = "mains_voltage mains_time CT_voltage CT_time".split()
answer = {name:L for name,L in itertools.izip(names, lists)}

edited Mar 14, 2016 at 20:33

answered Mar 14, 2016 at 18:07

inspectorG4dget

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6 Comments

Hassaan Over a year ago

I would like to know how to do that with arbitrary dictionary keys - not just list1,list2,list3, etc

Łukasz Rogalski Over a year ago

what would be a names source? please clarify.

Hassaan Over a year ago

The dictionary will be initialized with keys, but empty values

inspectorG4dget Over a year ago

@Rogalski: names source? What do you mean?

inspectorG4dget Over a year ago

@M.Hassaan: it will have empty values only if lists contains empty lists

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