cli.py 文件源码

def cuv(ctx, coverage_fname, exclude, branch):
    """
    Cuv'ner provides ways to visualize your project's coverage data.

    Everything works on the console and assumes a unicode and
    256-color capable terminal. There must be a .coverage file which
    is loaded for coverage data; it is assumed to be in the top level
    of your source code checkout.
    """
    if coverage_fname is None:
        coverage_fname = find_coverage_data('.')
        # coverage_fname still could be None

    cfg = Config()
    ctx.obj = cfg

    cfg.nice_width = min(80, click.get_terminal_size()[0])
    cfg.exclude = exclude

    cfg.branch = branch
    if coverage_fname is not None:
        cfg.data = coverage.Coverage(data_file=coverage_fname)
        cfg.data.load()
    else:
        raise click.UsageError(
            "No coverage data. Do you have a .coverage file?"
        )