How to remove all 0 from a dictionary in python?

Question

Lets say I have a dictionary like this:

{'1': 2, '0': 0, '3': 4, '2': 4, '5': 1, '4': 1, '7': 0, '6': 0, '9': 0, '8': 0}

I want to remove all items with a value of zero

So that it comes out like this

{'1': 2, '3': 4, '2': 4, '5': 1, '4': 1}

Write some code. Why I downvoted this question: http://meta.stackexchange.com/a/149138/133242 And why are you using a dict instead of a list? — Matt Ball, Apr 04 '13 at 22:00
Close cousin, if not exact duplicate: [Remove all occurences of a value from a Python list](http://stackoverflow.com/questions/1157106/remove-all-occurences-of-a-value-from-a-python-list) — Robert Harvey, Apr 04 '13 at 22:00
Well I been trying to do this for like an hour now. So I decided to seek help. Sorry I asked a question — Jett, Apr 04 '13 at 22:10

score 14 · Accepted Answer · answered Apr 04 '13 at 22:01

14

Use a dict-comprehension:

In [94]: dic={'1': 2, '0': 0, '3': 4, '2': 4, '5': 1, '4': 1, '7': 0, '6': 0, '9': 0, '8': 0}

In [95]: {x:y for x,y in dic.items() if y!=0}
Out[95]: {'1': 2, '2': 4, '3': 4, '4': 1, '5': 1}

answered Apr 04 '13 at 22:01

Ashwini Chaudhary

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score 6 · Answer 2 · answered Apr 04 '13 at 22:01

6

Use a dictionary comprehension:

{k: v for k, v in d.items() if v}

answered Apr 04 '13 at 22:01

Blender

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This will remove values like `False`,`[]`,`None` as well. – Ashwini Chaudhary Apr 04 '13 at 22:03
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@AshwiniChaudhary: Yep. – Blender Apr 04 '13 at 22:04

How to remove all 0 from a dictionary in python?

2 Answers2