plotting.py 文件源码

def _prepareYearAndMonthStats(stats, columns):
    # Group by month and change stats from columns to row attribute
    dataToPlot = stats.groupby(stats['date'].dt.to_period("M")).mean()
    dataToPlot = pd.melt(dataToPlot.reset_index(), id_vars=['date'], value_vars=columns,
                         var_name='stats', value_name='val')
    # Rename stats
    dataToPlot['stats'].replace(NAMES, inplace=True)
    return dataToPlot