Latest Articles
Page 11
Here's an English translation of the summary for the Japanese blog article: "Whether it gets resolved or not: A JavaScript code example." If you need further assistance or more details, feel free to ask!
System packages (`libmysqlclient-dev` etc.) and env vars needed when Python's MySQLdb fails with `mysql_config not found`.
Pass a logged-in session cookie from Selenium WebDriver into `requests` to download files that require a browser-bound session.
Override the URL patterns (`urls.py`) in a Django test to inject a test-only view — use `@override_settings(ROOT_URLCONF=...)`.
Avoid `table already exists` failures in Django tests when running with `--keepdb` after cancelling migrations — how to forcibly reset the test DB migration state.
Django: Best way to unit-test an abstract model - Stack Overflowhttps://stackoverflow.com/questions/4281670/django-best-way-to-unit-test-an-abstract-model
Use a lambda callback with Python's `re.sub` to replace only a captured group (e.g. a version number) inside a larger pattern.
MultiViews is enabled
When you start samba-ad-dc using the command `$ sudo systemctl start samba-ad-dc`, and check either /var/log/samba/log.smbd or /var/log/samba/%m, it appears that port 53 is unavailable.
Apache suddenly crashes, and upon checking the logs, I found the following messages: "AH00050: Child 7815 returned a Fatal error... Apache is exiting!" and "AH02818: MPM run failed, exiting."
When `do-release-upgrade` to Ubuntu 18.04 hangs on libnih1 or upstart packages, here is how to unstick and complete the release upgrade.
Strip 4-byte characters (emoji, some kanji) from a Python 3 `requests` response — useful when storing into MySQL utf8 (3-byte) columns.
If `python3.6 -m venv venv` fails on Ubuntu, the `python3.6-venv` package is missing — install it via apt to enable virtual environment creation.
One-liner to count upgradable packages with `apt list --upgradable`, plus a shell script to surface the number in the MOTD login banner.
If the volume mounted with Goofys is not visible to other users
When you download a CSV from Amazon, it might sometimes be a TSV with a BOM.
Notes on installing OpenVPN on an Ubuntu server and setting up a site-to-site VPN.
1. If the certificate is in DER format, convert it to PEM
※ This does not mean creating constraints in an RDB. It simply means creating a ForeignKey field that works for now.
sudo bash -c "curl -kL https://bootstrap.pypa.io/get-pip.py | python"