Restricted Prime Restricted Prime

Next, we want to teach our censored calculator to check if numbers are primes or not. This crazy calculator has learned new some words (but forgotten some others) and does not accept new words, certain symbols and it hates digits!

The list of forbidden words and symbols:

  • import
  • div
  • eval
  • range
  • len
  • ⁄ % −
  • digits...

Output: Is it prime or not as a boolean.


checkio(5) == True
checkio(18) == False

How it is used: Challenge your creativity and come up with a solution to fit this mission's specs!

Precondition: 1 < number < 10000

You should be an authorized user in order to see the full description and start solving this mission.

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CheckiO Extensions

CheckiO Extensions allow you to use local files to solve missions. More info in a blog post.

In order to install CheckiO client you'll need installed Python (version at least 3.8)

Install CheckiO Client first:

pip3 install checkio_client

Configure your tool

checkio --domain=py config --key=

Sync solutions into your local folder

checkio sync

(in beta testing) Launch local server so your browser can use it and sync solution between local file end extension on the fly. (doesn't work for safari)

checkio serv -d

Alternatevly, you can install Chrome extension or FF addon

checkio install-plugin
checkio install-plugin --ff
checkio install-plugin --chromium

Read more here about other functionality that the checkio client provides. Feel free to submit an issue in case of any difficulties.

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