How-To on The Edge Cases

Opening Text-Based pgdump Database Backups (postgres)

Wed, 19 Jun 2024 21:15:11 +0000

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The file itself (unless it’s a binary file) can be opened in a text editor to inspect. To create a database to work with from the backup file, you have to create a database to restore into and then restore the database.

To create:

$ psql -U postgres
postgres=# createdb dbname

To restore from the backup:

psql -U postgres -d dbname -f path/to/your/file.sql

Pipx and Pre-Commit Bad Interpreter No Such File

Tue, 03 Oct 2023 21:03:01 +0000

While this is generally an issue with pipx, it is likely to come up with pre-commit hooks (since the underlying binaries should be installed with pipx). The issue is the error Bad Interpreter No Such File or Directory when running a pipx-installed application, like poetry or black. This happens on MacOS because of a broken symlink between the application-specific binary path and the Python binary actually being used (I’ve found this to be a brew issue, specifically). This can be fixed with pipx reinstall-all, which will uninstall and reinstall all pipx applications with working symlinks to the appropriate Python binaries.

Setting Up a Virtual Environment Kernel In Jupyter

Mon, 02 Oct 2023 23:26:49 +0000

Activate your project’s virtual environment
Run pip install ipykernel
Run python -m ipykernel install --user --name=myenv
Open notebook and select the myenv kernel

Source

https://janakiev.com/blog/jupyter-virtual-envs/#add-virtual-environment-to-jupyter-notebook

Installing Tensorflow on Silicon Macs

Tue, 28 Feb 2023 19:13:38 +0000

To install Tensorflow on a Silicon Mac, do the following in a virtual environment:

pip install tensorflow-macos
pip install tensorflow-metal

Ensure the version of tensorflow-metal matches with the tensorflow-macos version