nothing.py

An installable Python parent class to support do-nothing workflows.

python nothing.py --help

Read more about do-nothing workflows.

Features

• Reloadable
  • Stores a progress file (JSON) during execution, which can be loaded to resume from where it left off.
  • The progress file can be human-edited before loading. E.g. skip a step, or change a value.
• get_input(): a convenience for capturing input with a prompt.
• wait_for_done(): a convenience for the user to confirm step completion.
• report_problem(): a convenience for printing to stderr.
• set_value_from_input(): a convenience for setting a value based on user input, including offering a default value if available, and repeating the prompt until a valid value is entered.

Use

• Install directly from GitHub.
  • pip install git+https://github.com/SciTools-incubator/nothing.git
  • Include in a requirements file:
    • In a requirements.txt: git+https://github.com/SciTools-incubator/nothing.git
    • In the pip: section of a Conda YAML: - -e git://github.com/SciTools-incubator/nothing.git
• Create your own subclass of the Progress class. See the Demo class in nothing.py for an example.
• Create a script that calls YourClass.main().