48 lines
1.8 KiB
Markdown
48 lines
1.8 KiB
Markdown
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---
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layout: "post"
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title: "Add Python docstring to the beginning of anything in Emacs"
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date: 2016-11-30 07:52:37
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tags: [development, python, emacs]
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published: true
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author:
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name: Gergely Polonkai
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email: gergely@polonkai.eu
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---
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Now that I write Python code for a living, I write a lot of functions,
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classes, and modules. What I still tend to forget, and also find tedious,
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is adding docstrings. Unlike many developers, writing documentation is not
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an enemy of mine, but it usually comes to my mind when I finish
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implementation. The procedure, roughly, is this:
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* Decide where I am (in a function, in a class but not in one of its
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methods, or not inside such a block at all)
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* Go to the beginning of the thing
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* Insert `"""`
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* Leave a blank line
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* Insert `"""`
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One of my mottos is if something takes more than one step and you have to do
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it more than twice, you should automate it after the first time. This puts
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a small(ish) overhead on the second invocation (when you implement the
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automation), but it usually worth the time.
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Since I use Emacs for pretty much everything coding-related (and many more,
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but that’s the topic of a different post), I wrote a small function to do it
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for me.
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{% gist gergelypolonkai/7b062a00d3b8a2555024521273cecfee python-docstring.el %}
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There are still a lot of things to improve:
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* it always inserts double quotes (althoug I couldn’t show a use-case when
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single quotes are preferred)
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* it doesn’t check for an existing docstring, just happily inserts a new one
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(leaving the old one alone, but generating a syntax error this way)
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* it would also be nice if I could jump to the beginning of a file even from
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a class method. I guess I will use prefix keys for that, but I’m not sure
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yet.
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You can bet I will implement these features, so check back soon for an
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updated version!
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