def _GetLineStyles(self, chart):
    """Get LineStyle parameters."""
    styles = []
    for series in chart.data:
      style = series.style
      if style:
        styles.append((style.width, style.on, style.off) % '%s,%s,%s')
      else:
        # If one style is missing, they must all be missing
        # TODO: Add a test for this; throw a more meaningful exception
        assert (not styles)
    return util.JoinLists(line_style = styles)
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/graphy/graphy/backends/google_chart_api/encoders.py/LineChartEncoder._GetLineStyles/swapped operands of `%`