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Jouni Seppänen

@jouniseppanen.com
73 followers 132 following 55 posts

A software developer or possibly data scientist living in Helsinki, Finland. Favourite technologies include Python, Matplotlib, Go, Clojure. Currently employed as a consultant at Reaktor. Other interests include competitive math and tai chi.

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Jouni Seppänen @jouniseppanen.com · 21/08/2025
Paperi-Hesari paljasti, että matkapuhelinverkon sijasta triptyykin kolmas paneeli onkin vain kuusi gigatavua.
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Jouni Seppänen @jouniseppanen.com · 23/12/2024
The Scorpio Killer from Dirty Harry, played by Andrew J. Robinson (who later played Garak in DS9)
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Jouni Seppänen @jouniseppanen.com · 18/12/2024
Claude made one for me: claude.site/artifacts/fa... Instructions: 1. Create a new directory 2. Create two files manifest.json and content.js 3. Go to chrome://extensions/ in Chrome 4. Enable "Developer mode" (toggle in top right) 5. Click "Load unpacked" and select your extension directory
[copy of the post above, but with "others" changed to "otters"]

Janne Aukia
Holiday project: a browser plugin to change "otters" ->
"otters" globally.
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Jouni Seppänen @jouniseppanen.com · 24/11/2024
In Finland there is an allegedly Turkish yogurt with a very manly image
A tub of yogurt, with a picture of a man sporting a formidable moustache and sideburns and wearing vaguely ethnic garb, with overlaid text "Turkisk Originalet, Naturell Yoghurt, Turkkilainen maustamaton jogurtti"
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Jouni Seppänen @jouniseppanen.com · 19/11/2024
For completeness, here is the code with the bug fixed.
lookup = {'cz': 'Czechia', 'de': 'Germany',
          'fi': 'Finland'}
filtered = [(x, lookup[x]) for x
            in ['ab', 'bc', 'cd', 'de', 'ef']
            if x in lookup]
print(filtered)
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Jouni Seppänen @jouniseppanen.com · 19/11/2024
Here is some code with a bug in it, which does not raise an error because of this for-loop feature. The intent is to find known country codes in a list of two-letter strings. (Easyish #Python puzzle: what does this actually output?)
lookup = {'cz': 'Czechia', 'de': 'Germany',
          'fi': 'Finland'}
filtered = [x for (x, lookup[x])
            in ['ab', 'bc', 'cd', 'de', 'ef']
            if x in lookup]
print(filtered)
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