Remove Dictionary Key, if Value is empty

Question

Goal: Have a dictionary-comprehension that removes a given key, if its respective value is "empty".

Empty means anything such as: [], 0, None, 0.0, "" etc.

Code:

thisdict =  {
  "brand": "Ford",
  "model": "Mustang",
  "year": ''  # [], 0, None, 0.0, "" etc.
}
print(thisdict)

thisdict = {val for key, val in thisdict.items() if val}  # Attempt

Please let me know if there is anything else I can add to post to help further clarify.

Will not do again in future, thank you

StressedBoi69420
– StressedBoi69420

2021-11-17 14:22:28 +00:00
Commented Nov 17, 2021 at 14:22 — StressedBoi69420
– StressedBoi69420, Commented Nov 17, 2021 at 14:22

Daweo · Accepted Answer · 2021-11-17 14:21:00Z

2

This

thisdict = {val for key, val in thisdict.items() if val}

is set-comprehension, if you need dict-comprehension do

thisdict = {key:val for key, val in thisdict.items() if val}

See PEP 274 for further discussion of Dict Comprehensions

edited Nov 17, 2021 at 14:21

answered Nov 17, 2021 at 14:18

Daweo

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1 Comment

StressedBoi69420 Over a year ago

Ahh thank you! Just as @Sayse pointed out

The knight · Accepted Answer · 2021-11-17 14:28:01Z

2

You can use built in method of python Dictionary(get)

{key:value for key,value in thisdict.items() if thisdict.get(key)}

answered Nov 17, 2021 at 14:28

The knight

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2 Comments

StressedBoi69420 Over a year ago

How might I tell which out of yours and @Daweo 's would run quicker? I do have a fairly large dictionary. More out of curiosity

The knight Over a year ago

i think the @@Daweo 's code would run quicker but am not sure.

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