[Community Puzzle] Library dependencies

Puzzles
#1

Coding Games and Programming Challenges to Code Better

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Created by @Rafarafa,validated by @Razovsky,@cedricdd and @Timinator.
If you have any issues, feel free to ping them.

#2

Hi
I tried to solve this puzzle and passed all the validators except 7, @Rafarafa can you share the inputs of the validator? :pleading_face:

#3

It’s pretty much this:

5
import builtins
import unittest
import time
import pandas
import sys
2
pandas requires unittest
unittest requires pandas

#4

My program output:
Import error: tried to import unittest but pandas is required.
Fatal error: interdependencies.
This seems like the right answer, is there something I missed in the statement?

#5

No idea. I will send you the validator 7 by PM because I’m not sure if it’s a spoiler or not. If you think the problem was due to a miss on my part please let me know.

1 Like
#6

No problem in validators as far as i know, everything worked fine for me

#7

Hi,
Great challenge. Having a second(or replace the one you gave that works) visible test case in the directions with an example of what prints if you can reorder would be helpful. I know the directions say what to print, but I was having a hard time understanding what it was asking for. Just a thought.

#8

I’m not sure I understand what you mean. Could you give an example?

#9

Maybe the trouble is on the word “lexicographically”. This means alphabetic order, but not only, it depends on the length of the string.

  • comparing two libraries by character, the first having a smaller character is “lexicographically” smaller
    EX1: itartool is “smaller” than *itertool
    EX2: itertools is “smaller” than j
  • if two librairies have the same character size, the smaller one in size is “lexicographically” smaller
    EX: itertool is “smaller” than itertools
#10

:wave: Hi to all and thanks to @Rafarafa (and @Razovsky, @cedricdd and @Timinator the approvals) for this funny full python-developers-oriented puzzle :wink: !

As said @Razovsky, i had a trouble with the word “lexicographically” (as English is not my native language :man_shrugging:),
→ but i finally could understand what i may do, and i’m now so pleased to get 100% validators for my solution :slight_smile: !

Thanks a lot to you :+1: :handshake:.
:information_source: tip : don’t hesitate to review and upvote my shared solution :wink: ?

#11

It’s the dictionary order.

2 Likes
#12

A few comments after successfully completing:

The instructions make no mention of comma separated dependency lists. That had to be sussed out from the test cases.

When encountering an error and printing out conflict for A requires missing B, it is not clear from the instructions what to do if A also requires missing C. The test cases only accept one of those, but it is not at all clear that is well thought out.

And finally, a minor quibble, but having to parrot back multiple long text strings with mandatory punctuation decreased my enjoyment of the puzzle more than I would have otherwise expected.

#13

You are right about the commas. I added one to test 3 (before it came even later), but I guess it was not enough. I added an explanation of the format in the output section. Note that this comma thingy is just me dealing with CodinGame I/O limitations, it’s not something that I would have done otherwise, it just makes tests shorter.

For the error printing, it’s literally this:

The imaginary compiler will import the libraries in the order that they are given by the puzzle until it finds one that requires a library that was not previously imported.

Even if they happen to be in the same line I don’t see why you wouldn’t apply that logic.

And for the long strings, I’m not a fan myself but they have the advantage of being self-explanatory and making the debugging easier (or at least that was the intention). I fail to see how the punctuation could be annoying though. I just copy pasted the statement when solving it in other languages and that was it.

#14

Regarding the error printing. While the order of importing is stated, we have to give a particular (unimported) dependency. The test assumes an implied order on the dependencies also.

#15

What’s the difference between Test 10 and Validator 10 ? That’s my only fail…
Nice Challenge for me, anyway

#16

None that I can think of, they were both generated by the same random logic. I will send you the validator by pm anyway and you can tell us what went wrong.

#17

Continuing the discussion from [Community Puzzle] Library dependencies:

Hello,
all my tests are accepted on the IDE except test 10. The Gourdin also talks about this test and its validator…
Is there something special in this test that I don’t see or is my code not correct? Please help me if possible.

#18

@LeGourdin didn’t comment on what went wrong for him so I’m afraid I can’t help you on that one. As stated, both test and validator follow the same random logic.

#19

(2.2) If the error is not salvageable return the message Fatal error: interdependencies…

What should we output in case the error is not salvageable but not because of interdependencies?

For instance:

1
import B
1
B requires A

Library B has a dependency which is never imported. There doesn’t seem to be a testcase with this but it’s also not excluded by the statement.