Python Map

Question

Python Map

Steve Jones - SSC Editor

SSC Guru

Points: 736222
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January 15, 2020 at 12:00 am

#3708425

Comments posted to this topic are about the item Python Map

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Stewart "Arturius" Campbell SSC Guru Points: 72626 More actions · Answer 1

Nice question, thanks Steve

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Marek Grzymala SSCommitted Points: 1946 More actions · Answer 2

the second line of code inside your function should be indented

def calcsq(n):
  return n*n

Jason- SSCrazy Points: 2795 More actions · Answer 3

A little bit tricky for me, the code as is (ignoring the missing indentation) would fail since calcsq is defined as calcsq then called as calcSq, the differing case would result in an exception. Fortunately returning an exception wasn't one of the available choices or I wouldn't have dug any further. Additionally print(result) doesn't print the values from the map object it prints "<map object at 0x000001..." you need to convert it to a set or list first to see the values in a print command (Python 3.7), good thing all the answers were lists or I wouldn't have dug deeper here either. Good question, I'm new to python so these questions give me direction of what functions to go learn about and play with. I find these very valuable, thanks.

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MESONMARCUS Grasshopper Points: 20 More actions · Answer 4

MESONMARCUS

Grasshopper

Points: 20

January 15, 2020 at 1:26 pm

#3715596

Will not execute with indent error.

MESONMARCUS Grasshopper Points: 20 More actions · Answer 5

Jason, Hahahaha, love it! Keep up the good work.

This reply was modified 4 years, 10 months ago by MESONMARCUS.

MESONMARCUS Grasshopper Points: 20 More actions · Answer 6

MESONMARCUS

Grasshopper

Points: 20

January 15, 2020 at 1:30 pm

#3715599

Hahahaha, love it! Keep up the good work.

Kathi Kellenberger SSChasing Mays Points: 601 More actions · Answer 7

I've added the indentation and corrected the case of calcsq.

Thanks,

Kathi

johnfowler SSCommitted Points: 1520 More actions · Answer 8

The print statement also needs to be changed to print(list(result))

Lynn Pettis SSC Guru Points: 442467 More actions · Answer 9

Picky, picky, picky. If you expect perfection in the questions, sorry, but that may not happen. Personally, I am lucky to even be able to spell Python as I don't currently use it. So I thought about the question logically, figured that calcsq computed the square of a value and that the map some how iterated over the list. Made the correct choice.

Hoping this means when I start work on learning Python it shouldn't be too difficult since I seem to be able to grasp some of the concepts.

Kathi Kellenberger SSChasing Mays Points: 601 More actions · Answer 10

Kathi Kellenberger

SSChasing Mays

Points: 601

January 15, 2020 at 6:33 pm

#3715750

OK, corrected that, too.

George Vobr SSCrazy Eights Points: 9997 More actions · Answer 11

Hmmm ... oddly, print (result) in Python v2.7.13 displays the result correctly. No need to add list().

johnfowler SSCommitted Points: 1520 More actions · Answer 12

Well that's strange. I'm just starting to learn Python and have v3.8.1 installed. If I use print(result) I get <map object at 0x00000000027C6E80>. If I use print(list(result)) I get [4, 9, 16, 25].

MESONMARCUS Grasshopper Points: 20 More actions · Answer 13

Lynn Pettis, the difference in genetic structure between humans and chimps is around 4%. The pickyness of evolution is what gave rise to humans. One error in one line of code could result in AI eradicating biological life. We need to teach our developing programmers that pickyness is everything. 😉

MESONMARCUS Grasshopper Points: 20 More actions · Answer 14

Now I wait for someone to be picky and correct my spelling of pickiness.