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Python

Posted by Conrad Landicho
Conrad Landicho
3,312 Points

Dictionary comprehension

Just wondering, could it be possible to use comprehension in this example? If so, what would be the correct way to do it? Thanks for any info you can provide.

5 Answers

james south
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james south
Front End Web Development Techdegree Graduate 33,271 Points
james south
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james south
Front End Web Development Techdegree Graduate 33,271 Points

i was writing my answer when you posted the video link so i hadn't seen it. dict comps are used to create dicts, so i don't think they would be useful here since he's already got a dict.

Conrad Landicho
Conrad Landicho
3,312 Points
Conrad Landicho
Conrad Landicho
3,312 Points

Hmmm.... I thought I made that comment/question on the specific video. I wonder where it went .... hang on a sec, while I search for it.

Conrad Landicho
Conrad Landicho
3,312 Points
Conrad Landicho
Conrad Landicho
3,312 Points

ok, found it ... .here's that video, please take a look at 2:30:

https://teamtreehouse.com/library/using-databases-in-python/meet-peewee/queries-are-your-friend

james south
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.a{fill-rule:evenodd;}techdegree seal-36
james south
Front End Web Development Techdegree Graduate 33,271 Points
james south
.a{fill-rule:evenodd;}techdegree seal-36
james south
Front End Web Development Techdegree Graduate 33,271 Points

dictionary comprehensions are similar to list and set comprehensions. inside curly braces {} you put k:v for .... k in some other collection or perhaps for k,v in another dictionary. so for example:

newDict = {k:v for k, v in oldDict.items() if v < 5}
newDict = {x:x**2 for x in range(8)}
Conrad Landicho
Conrad Landicho
3,312 Points
Conrad Landicho
Conrad Landicho
3,312 Points

so, I guess, the answer to my question is no ?