What am I doing wrong here? reduce vs list comprehension?

Question

I've re-watched the video, looked through the docs, and am now resorting to trial-and-error. Can someone please go ahead and explain this to me? I still don't fully understand what a list comprehension entails as well.
```maps.py
dimensions = [
    (5, 5),
    (10, 10),
    (2.2, 2.3),
    (100, 100),
    (8, 70),
]
def area(tup):
   return tup[0] * tup[1] 
areas = reduce(add, map(area, dimensions))
```

Steven Parker · Accepted Answer

First some hints:  You won't need reduce.  And a list comprehension is a list, so it will be enclosed in []'s, and will have a kind of a modified loop syntax inside.  In fact, you could get the same result using a loop.  And remember to use your area function.
Got it now?  If not, you might try reviewing the video.
If that still doesn't help, and you'd like to peek at an answer...
:warning: Spoiler Alert
py
areas = [ area(item) for item in dimensions ]

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Andrew Winkler

Andrew Winkler

What am I doing wrong here? reduce vs list comprehension?

1 Answer

Steven Parker

Steven Parker

Spoiler Alert

Andrew Winkler

Andrew Winkler