serhii.net

• Python Type Hints - How to Manage “type: ignore” Comments with Mypy - Adam Johnson
• The mypy configuration file — Mypy 0.940+dev.63abf4b5b26edb2c7db2a9ff50dfa0e63a43434a.dirty documentation

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

jedi-vim and deoplete

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.

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

xdg-settings gets the award for least intuitive interface ever.

• xdg-settings get default-web-browser was firefox.
• xdg-settings set default-web-browser qutebrowser.desktop is quiet
• xdg-settings get default-web-browser is still firefox.
• man page says that the errors are shown as …return code??
• echo $? returned 2, which is file not found basically.
• Bonus points for not accepting -h (only --help), and having --list as a parameter, but get/set as commands.

> xdg-settings set default-web-browser

xdg-settings: invalid application name

oh well.

Created a file with -> in the name, it didn’t appear on mobile, checked sync logs - not there because the name is “illegal”. Is not allowing > a global thing or only for Android?

For an executable (..qutebrowser.sh) to be an ‘application’, it has to have a .desktop file in ~/.local/share .¹

For qutebrowser, created this:

[Desktop Entry]
Name=Qutebrowser
Comment=Qutebrowser
Exec="~/.local/bin/qb %f"
Terminal=true
Type=Application
StartupNotify=true
MimeType=application/x-www-browser;
Keywords=python;

• To test it, desktop-file-validate qutebrowser.desktop
• To refresh the db, sudo update-desktop-database
• sudo desktop-file-install qutebrowser.desktop then put it in /usr/share/applications ²

This describes all the things needed to set qb as default browser: New option for open link with browser · Issue #716 · RocketChat/Rocket.Chat.Electron

At the end, symlinked /usr/bin/qb to it’s location in my home folder, maybe the universe will come crashing on me but then I don’t have to mess with the usual creation of bash runner scripts in ~/.local/bin/.. to have it globally available. Including for things like update-alternatives that seem to want a global thing.

• Screen screens:
  • screen -R screename attaches a screen with this name or creates it.
    • Tab completion works!
    • You can only write part of the name, will work if it’s enough to identify it
  • <C-a> :sessionname newscreenname renames an existing instance
• ~/.screenrc exists. Some useful settings:
  • defscrollback 200000 for “infinite” scrollback
  • deflog on to log everything automatically
• Using screen when no screen is installed¹ : connect to it with ssh from any other server that does have screen installed.

sshfs mounts a remote folder to one on the local filesystem.

• sshfs server:/data/me ./local-folder -p 12345
• sshfs -o Ciphers=aes128-ctr -o Compression=no server:/data/me ./local-folder -p 12345 may be faster

When I tried it at the beginning it was horribly slow, the problem was the zsh prompt that had info about the current git repo. Disabling it or using bash solved the issue.

If you copy a directory, there may be symlinks there, that will also show fine when you tree or cat or whatever. What saved me was their different color in the terminal.

.. How did people do this in b/w terminals?

TODO How can I avoid this in the future, given my heavy symlinks use?