seulcoding

$ psql postgres=# \l List of databases Name | Owner | Encoding | Collate | Ctype | Access privileges --------------+-------------+----------+---------+-------------+----------------------------- template0 | seulchankim | UTF8 | C | ko_KR.UTF-8 | =c/seulchankim + | | | | | seulchankim=CTc/seulchankim template1 | seulchankim | UTF8 | C | ko_KR.UTF-8 | =c/seulchankim + | | | | | seulchankim=CTc/seu..

Install pyenvusing brewbrew install pyenv # using your own profile # use ~/.bashrc or ~/.bash_profile # ~/.zshrc when using zsh echo 'export PYENV_ROOT="$HOME/.pyenv"' >> ~/.bash_profile echo 'export PATH="$PYENV_ROOT/bin:$PATH"' >> ~/.bash_profile echo 'eval "$(pyenv init -)"' >> ~/.bash_profile source ~/.bash_profile Install virtualenvusing brewbrew install pyenv-virtualenv echo 'eval "$(pyenv..

usling list comprehension & lambda# list comprehension flat_list = [item for sublist in l for item in sublist] # labmda flatten = lambda l: [item for sublist in l for item in sublist] using itertools.chain()import itertools flat_list = list(itertools.chain.from_iterable(l)) using sumsuper easy but not inefficient wayflat_list = sum(l, []) using reducefrom functools import reduce flat_list = redu..

Recently I made chat function with django channels 2.0It’s bit easy to create function in local, but I encountered obstacle while deploy it to production server.I have to use asgi for deploy socket. For that, I use daphne instead of gunicorn or uwsgi.Install redis in ubuntuFirst, just redis. It’s not a hard work.sudo apt-get install redis-server # then start server redis-server start # can acces..

18-05-31# my answer commit = "0??+0+!!someCommIdhsSt" def getCommit(commit): return ''.join([x for x in list(commit) if x.isalpha()]) # best answer def getCommit(commit): return commit.lstrip('0?+!') 18-06-05lambdarepeatChar = lambda ch, n: ch * n def getPoints(answers, p): questionPoints = lambda i, ans: i+1 if ans else -p res = 0 for i, ans in enumerate(answers): res += questionPoints(i, ans) ..

What’s uuidUUID(Universal Unique Identifier) is a 128-bit number used to identify information in computer systems.wikipedia ‘UUID’It represented as 32 hexadecimal digits, displayed in five groups separated by hyphens, form 8-4-4-4-12 for total of 36 characters.022db29c-d0e2-11e5-bb4c-60f81dca7676 Make uuid in pythonimport uuid print uuid.uuid4() Use uuid in djangodjango support UUIDField for eas..

When using python, I used to use pyenv and virtualenv.I prefer to use pyenv in local environment because I can choose python version easily, and it can be used with autoenv for convenience.But either way, I have to use pip for insatll python packages.Recently I found out pipenv.It’s a tool that aims to bring the best of all packagiong worlds to the Python world.It automatically creates and manag..

InstallInstall with pippip install django-ckeditor Add ckedtor to INSTALLED_APPSAnd collectstatic command for add ckeditor static files.python manage.py collectstatic In dev environment, just copy ckeditor directory from staticfiles after collectstaticAnd add CKEDITOR_BASEPATH for ckedtor directory unber staticfiles (STATIC_ROOT)CKEDITOR_BASEPATH = "/static/ckeditor/ckeditor" And add window.CKED..

Recently I use django-allauth. (github here). It’s useful for social login, and upgrading functions for default login. When using logout, allauth basically supply logout confirm page. If you want to remove this page, and just logout when get (/accounts/logout), add this to settings.py ACCOUNT_LOGOUT_ON_GET = True

Recently, I made chat service with django channels. It’s not temporary chat like CS, so I have to save and load all chat logs and messages.First, I try to use redis to save those data.But it’s not that big project, and I want to use django ORM to those data.I found good library to make multiple table per one model. I want to make multiple tables for Message model.architect enhances ORMs with mor..