Emulating a pass in a ternary operator?

Question

I'm creating a list comprehension where I grab a list of keys from a dictionary, ignoring certain specified ones.

[x if x not in ignoreKeys else None for x in entity]

I'm currently using else None as my way of not appending the ignored keys, but ideally I would get the list comprehension to pass over that iteration. Unfortunately pass gives a syntax error, so I'm wondering if there might be some way I can emulate the pass functionality?

related: http://stackoverflow.com/q/17321138/2096752 – shx2 May 08 '15 at 10:27 — shx2, May 08 '15 at 10:27

score 5 · Accepted Answer · edited Aug 31 '21 at 23:58

5

You don't need else at all, just use if :

[x for x in entity if x not in ignoreKeys]

This will return the values that are not in ignoreKeys.

edited Aug 31 '21 at 23:58

Stefan Gruenwald

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answered May 08 '15 at 10:22

Mazdak

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Aha! I had only tried this with if on the other side. Works perfectly! – SuperBiasedMan May 08 '15 at 10:24

Emulating a pass in a ternary operator?

1 Answers1