In the middle of the desert you can say anything you want
In the context of reading a settings.ini from python’s decouple1 config lib, this works as empty string
YAML_CONVERTER_PREFIX=
has to be cast to string though:
D_YAML_CONVERTER_PREFIX = config("YAML_CONVERTER_PREFIX", cast=str)
These don’t, these are strings containing two characters, "" and '' respectively.
YAML_CONVERTER_PREFIX=""
YAML_CONVERTER_PREFIX=''
Wooho!
files = list(input_dir.glob("*.md"))[: cs.limit]
if output_path.is_file() and ((l := len(files)) != 1):
raise ValueError(f"Can't write {l} files to single file {output_dir}")
Had to use additional parentheses around the actual assignment. Without that, black fails in an interesting way:
error: cannot format smw_to_hugo/yaml_converter.py: cannot use --safe with this file; failed to parse source file.
Just discovered this! In vim, if I skip the pattern, it’ll take the one last searched for:
/mypattern
:s//newpattern/g
Had weird issues with kitty terminal output being wrong, lines in vim/nvim being in wrong places, usually because it thought the terminal was a different size than it really was (blamed it on nvim initally, but the problem happened in other complex CLI programs too, notably tig).
$TERMINFO wasn’t set, and the terminfo file was nowhere to be found. The package kitty-terminfo was installed though.
In any case, downloaded the terminfo file from the repo and set the env variable manually in zshrc, now it works:
export TERMINFO="$HOME/.config/kitty/xterm-kitty"
After for the nth time writing awkward code like
if limit is None:
limit = len(mylist)
decided to see if there’s a better way. Looked into the walrus operator etc,but decided to test what I get with None.
Well, mylist[:None] works! No errors, I’d guess I get a copy of it same as mylist[:].
Will save me hundreds of lines in the future!
Docu about slice1 is terse, says it uses range(start,end,step) under the hood with start and step defaulting to None. But range doesn’t accept None for all arguments! TODO for later I guess.
Things I can pass to mypy like mypy --disallow-any-generics can be configured in pyproject.toml:
[tool.mypy]
show_error_codes = true
warn_unused_ignores = false
disallow_any_generics = false
ignore_missing_imports = true
Is nice! It transparently got all vim’s configs plugins and they seems to work!
set runtimepath^=~/.vim runtimepath+=~/.vim/after
let &packpath = &runtimepath
source ~/.vimrc
A Complete Guide to Neovim Configuration for Python Development - jdhao’s blog
deoplete for faster completions, jedi-vim for goto and friends.
davidhalter/jedi-vim: Using the jedi autocompletion library for VIM.
Interesting bindings:
let g:jedi#usages_command = "<leader>n"
let g:jedi#goto_command = "<leader>d"
let g:jedi#rename_command = "<leader>r"
let g:jedi#documentation_command = "K"
But it didn’t work for packages not living inside the default python environment, and manually each venv would be tedious. poet-v to the rescue!
let g:poetv_executables = ['poetry']
map <leader>va :PoetvActivate<CR>
Deoplete1 is an autocomplete framework (nvim-only, was my last reason for switching), deoplete-jedi2 makes it use jedi.
To select on enter, had to add this to vimrc/nvimrc:
set completeopt+=noinsert
In general deoplete faq in vim help is much longer than the one on their github repo.
nvie/vim-flake8: Flake8 plugin for Vim, <F7> to run it on the current buffer.
Found a post1 about it.
But I like much more Click’s way to do this (Options — Click Documentation (8.0.x)):
@click.option(
"--username", prompt=True,
default=lambda: os.environ.get("USER", "")
)
Of course, os.get.environ can be replaced by python-decouple’s config().
Lastly, ini files support interpolation2 (%(whatever)s)! Final solution:
[settings]
EXPORT=../../exports
CATS_INPUT=%(EXPORT)s/cats.json
@click.option(
"--input-file",
"-i",
type=click.Path(exists=True, path_type=Path),
default=lambda: config("CATS_INPUT"),
)
Also TIL if I use quotes in the ini file, they’ll become part of the final filename.
Stumbled upon python-decouple · PyPI, which seems like a “better” dotenv (supports casting, defaults etc)
For example, this is a settings.ini in poetry project root:
[settings]
ECHO=True
I can overwrite these parameters like ECHO=False poetry run python myscript.py
Neat!
Python Best Practices for a New Project in 2021 - Alex Mitelman
Describes a setup that uses poetry, black, flake8, pytest, mypy and new to me isort to sort imports.
The Fast track section has a TL;DR of how to create that setup.
I also really like this intro to poetry: Package Python Projects the Proper Way with Poetry