In https://github.com/python/cpython/pull/2720, I propose code changes to the json.tool command line utility. These changes are entirely non-functional and instead focus on improving code readability, style, brevity, extensibility, and maintainability.

These changes mainly came up during the implementation of two enhancements of json.tool:

+ https://github.com/python/cpython/pull/345 to add indentation / whitespace options (bpo-29636).

+ https://github.com/python/cpython/pull/201 to display non-ascii characters (bpo-27413).

These issues and pull requests are currently awaiting further consensus around their design and desirability. Therefore, I wanted to separate the non-functional code improvements from these PRs into a distinct PR.

This has the benefit of allowing the future enhancement PRs to focus solely on adding features rather than the readability changes.