House Password

House Password

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Stephan and Sophia forget about security and use simple passwords for everything. Help Nikola develop a password security check module. The password will be considered strong enough if its length is greater than or equal to 10 symbols, it has at least one digit, as well as containing one uppercase letter and one lowercase letter in it. The password contains only ASCII latin letters or digits.

Input: A password as a string (str).

Output: Is the password safe or not as a logic value (bool).


assert checkio("ULFFunH8ni") == True
assert checkio("aaaaaaaaaaaaaaaaaaaaa") == False
assert checkio("aA1") == False
assert checkio("awzbdzkfz") == False

How it is used: If you are worried about the security of your app or service, you can check your users' passwords for complexity. You can use these skills to require that your users passwords meet more conditions (punctuations or unicode).


  • re.match("[a-zA-Z0-9]+", password);
  • 0 < len(password) ≤ 64.

Invalid hot key. Each hot key should be unique and valid
Hot keys:
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=

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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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