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frange

frange(*args)

Like range() but accepts float arguments.

Source code in src/robot/utils/frange.py 
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def frange(*args):
    """Like ``range()`` but accepts float arguments."""
    if all(is_integer(arg) for arg in args):
        return list(range(*args))
    start, stop, step = _get_start_stop_step(args)
    digits = max(_digits(start), _digits(stop), _digits(step))
    factor = pow(10, digits)
    return [x / factor
            for x in range(round(start*factor), round(stop*factor), round(step*factor))]