def progress()

in scripts/microupload.py [0:0]

• 11 lines of code
• 2 McCabe index (conditional complexity)

def progress(msg: str, xs: Sequence[T]) -> Iterable[T]:
    """Show progress while iterating over a sequence."""
    size = len(xs)
    sys.stderr.write('\r{}: 0% (0/{})'.format(msg, size))
    sys.stderr.flush()
    for i, x in enumerate(xs, 1):
        yield x
        s = '{0}: {1}% ({2}/{3})'.format(msg, int(i * 100 / size), i, size)
        sys.stderr.write('\r' + s)
        sys.stderr.flush()
    sys.stderr.write('\n')
    sys.stderr.flush()