Settngs

This library is an attempt to merge reading flags/options from the commandline (argparse) and settings from a file (json).

It is a modified argparse inspired by how flake8 loads their settings. Note that this does not attempt to be a drop-in replacement for argparse.

Install with pip

pip install settngs

A trivial example is included at the bottom of settngs.py with the output below (using bash). For a more complete example see ComicTagger.

$ python -m settngs
Hello world
$ python -m settngs --hello lordwelch
Hello lordwelch
$ python -m settngs --hello lordwelch -s
Hello lordwelch
Successfully saved settings to settings.json
$ python -m settngs
Hello lordwelch
$ python -m settngs -v
Hello lordwelch
merged_namespace.values.Example_Group__verbose=True
$ python -m settngs -v -s
Hello lordwelch
Successfully saved settings to settings.json
merged_namespace.values.Example_Group__verbose=True
$ python -m settngs
Hello lordwelch
merged_namespace.values.Example_Group__verbose=True
$ cat >settings.json << EOF
{
  "example": {
    "hello": "lordwelch",
    "verbose": true
  },
  "persistent": {
    "test": false,
    "hello": "world"
  }
}
EOF
$ python -m settngs --no-verbose
Hello lordwelch
$ python -m settngs --no-verbose -s
Hello lordwelch
Successfully saved settings to settings.json
$ python -m settngs --hello world --no-verbose -s
Hello world
Successfully saved settings to settings.json
$ python -m settngs
Hello world

settngs.json at the end:

{
  "Example Group": {
    "hello": "world",
    "verbose": false
  },
  "persistent": false,
  "hello": "world"
}

What happened to the 'i'?

PyPi wouldn't let me use 'settings'