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python package common tasks for users (e.g. copy examples, fetch data, ...)

Project description

pyct

A utility package that when installed makes various commands available to other packages. (Currently no sophisticated plugin system, just a try import/except in the other packages.) The same commands are available from within python. Can either add new subcommands to an existing argparse based command if the module has an existing command, or create the entire command if the module has no existing command.

Currently, there are commands for:

  • Copying examples and fetching data

Copying examples and fetching data

To copy the examples of e.g. datashader and download the required data, use the examples command:

$ datashader examples --help
usage: datashader examples [-h] [--path PATH] [-v] [--force]

optional arguments:
  -h, --help     show this help message and exit
  --path PATH    location to place examples and data
  -v, --verbose
  --force        if PATH already exists, force overwrite existing examples if older than source examples

To copy the examples of e.g. datashader but not download the data, use the copy-examples command:

usage: datashader copy-examples [-h] [--path PATH] [-v] [--force]

optional arguments:
  -h, --help     show this help message and exit
  --path PATH    where to copy examples
  -v, --verbose
  --force        if PATH already exists, force overwrite existing examples if older than source examples

To download the data only, use the fetch-data command:

usage: datashader fetch-data [-h] [--path PATH] [--datasets DATASETS] [-v]

optional arguments:
  -h, --help           show this help message and exit
  --path PATH          where to put data
  --datasets DATASETS  *name* of datasets file; must exist either in path specified by --path or in package/examples/
  -v, --verbose

Can specify different 'datasets' file:

$ cat earthsim-examples/test.yml
---

data:

  - url: http://s3.amazonaws.com/datashader-data/Chesapeake_and_Delaware_Bays.zip
    title: 'Depth data for the Chesapeake and Delaware Bay region of the USA'
    files:
      - Chesapeake_and_Delaware_Bays.3dm

$ earthsim fetch-data --path earthsim-examples --datasets-filename test.yml
Downloading data defined in /tmp/earthsim-examples/test.yml to /tmp/earthsim-examples/data
Skipping Depth data for the Chesapeake and Delaware Bay region of the USA

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