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monica_b1998@lemmy.world to Python@programming.dev · 4 个月前

Python String Formatting: f-strings vs .format() vs %

slicker.me

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Python String Formatting: f-strings vs .format() vs %

slicker.me

monica_b1998@lemmy.world to Python@programming.dev · 4 个月前
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  • charokol@lemmy.world
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    4 个月前

    Didn’t think I’d learn anything new in this article, but I never knew about f-string’s self-documenting expression syntax. I’ve been doing it myself like a chump!

    • monica_b1998@lemmy.worldOP
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      4 个月前

      lol, don’t be too hard on yourself!

      • charokol@lemmy.world
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        4 个月前

        I’m not! I’m excited to forget this exists the next time it would be convenient for me to remember it 😋

  • Caveman@lemmy.world
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    4 个月前

    I worked in python when f-strings were pretty new. Didn’t realise why you would use anything else. It just reads better.

    • Michal@programming.dev
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      4 个月前

      Most importantly you can’t use them with translated strings, so it’s not usable for user facing strings unless you don’t care. This limits fstring usefulness a lot in the projects I work on.

      • Badabinski@kbin.earth
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        4 个月前

        Luckily, there’s now t-strings (e.g. t"{buh}") for that use case (among many others). Here’s the PEP: https://peps.python.org/pep-0750/

  • NotSteve_@lemmy.ca
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    4 个月前

    F-strings and .format() are two features I miss from Python whenever I’m writing stuff in another language. The syntax is just so minimal yet powerful

    • Vulwsztyn@programming.dev
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      4 个月前

      in what language?

      • NotSteve_@lemmy.ca
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        4 个月前

        Go mainly. fmt has some functions to do the same sort of formatting but I loved the minimal syntax in Python. JavaScript has a really nice syntax for it as well actually

        • Vulwsztyn@programming.dev
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          4 个月前

          reasonable answer

  • itsathursday@lemmy.world
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    4 个月前

    What annoyed me moving from % to format was the loss of “formatting” floats to integers with “{:d}”, now you get a ValueError

    • ZoteTheMighty@lemmy.zip
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      4 个月前

      {:.0f} always works though for floats or ints

      • itsathursday@lemmy.world
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        4 个月前

        Ah nice one

  • slag@lemmy.dbzer0.com
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    4 个月前

    And here I thought f-strings were something that happen when others are forced to read my code.

  • Stefan_S_from_H@piefed.zip
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    4 个月前

    Formatting strings, the running gag of the Python community.

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