def prompt(kx):
    """
    Facilitate the validation and usage printout for
    targets with required values.
    """
    if len(kx['value'].strip()) == 0:
        print kx['message']
        if 'usage' in kx:
            print '{:>9}\n{:10}{}'.format('Usage:', '', kx['usage'])
        return True
    return False
dataset/ETHPy150Open Aeronautics/aero/Makefile.py/prompt/original