def step_impl(context, value):
value = world.replace_variables(value)
if not value[:-4].lower() == '.png':
value = value + '.png'
folder = os.path.dirname(value)
if not folder == '':
if not os.path.exists(folder):
os.makedirs(folder)
if not world.save_current_page_screenshot(value):
log.failed("Could not save a screenshot.")
