IPython: the Python REPL interpreter
IPython is a neat alternative of Python's builtin REPL (Read–Eval–Print Loop) interpreter, also a kernel of Jupyter.
All posts by Vinta
Speed up Python and Node.js builds on Travis CI
For Python and Node.js projects, you could totally cache both site-packages and node_modules directories in every Travis CI build.
Django's get_or_create() may raise IntegrityError but subsequent get() raises DoesNotExist
get_or_create() 拋出 IntegrityError 但是接著 get() 一次卻會是 DoesNotExist，以上的錯誤常常會發生在 MySQL 的 isolation level 是 REPEATABLE READ 的情況下。MySQL 默認採用 REPEATABLE READ（而 PostgreSQL 預設是 READ COMMITTED）。
Transaction isolation levels in MySQL
A non-repeatable read occurs, when during the course of a transaction, a row is retrieved twice and the values within the row differ between reads.
Configure i18n translation in Django
Internationalization and localization for your Django project.